Deoxygenated blood. Why do blue veins appear on the leg and should they be treated?

Venous blood (in the photo it is in the right vial *) is dark red (crimson). Veins are blue. How can this be?

There is even an assumption that deoxygenated blood actually blue, and it turns red only when it flows out and comes into contact with air. This, of course, is not true: when blood is taken from a vein in your hospital, the blood does not come into contact with air - but it is still red.

Let's follow the flight of the sun's rays

1) The rays of the sun enter the skin, pass through the skin, through the subcutaneous adipose tissue, through the wall of the vein - and reaches the venous blood.

2) The rays of the Sun contain the seven colors of the rainbow. Venous blood has a purple (red + blue + yellow) color, so it reflects these three colors, and absorbs all other colors.

3) Red, blue and yellow rays reflected by blood move back: they pass through the wall of the vein, subcutaneous fatty tissue, skin - and enter our eye.

The point here is that the tissues of our body absorb red rays, and blue rays pass through. And we just saw how the light, before getting into our eyes, passes through the tissues as much as twice - first there, then back. For these two times, all the red color is absorbed by the tissues - only blue remains. (In the picture on the right, we removed the skin, the light passes only two times through the vein wall, so the exposed vein has a reddish tint. In the left picture, the light passed through all the layers twice, so it turned out as always.)

A similar situation is observed with eye color. There is only one dye in our iris - it is melanin. Depending on the concentration, it can be black, brown or light brown - but certainly not blue. The blue color of the eyes is obtained in the same way as the blue color of the veins: if the layer of brown melanin is deep, then the light, passing through the tissues twice (back and forth), loses all red rays, and only blue ones remain.

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*The vials contain model liquids - these are preparations for the school. But they convey the color correctly.

Diseases venous vessels man is as old as the world. Even the ancient Egyptians and Hippocrates looked for effective treatment from varicose veins. Despite the development medical science, problems of varicose veins in the legs, arms and other areas of the body continue to cause concern for many people. Patients ignorant of anatomy and physiology wonder why the vessels are visible through the surface of the skin, why the veins are blue and what to do in such situations. In the article we will try to answer all these difficult questions in an accessible way.

Norm variant

Many people are frightened by the appearance of protruding veins in the arms, legs, or any other part of the body. Especially if they haven't encountered this problem before. The color of the protruding veins is always blue or purple-bluish. This seems strange to patients, since it is well known that human blood has a bright scarlet or red-burgundy color. The answer to the question why the veins are blue when they appear on the surface of the skin of the hands is very simple. Venous blood due to saturation with carbon dioxide has a dark cherry tint. Rays of light, passing through the skin, subcutaneous fat and venous wall, are refracted, due to which we see precisely blue veins on the skin of the hands and feet.

Protruding veins in the arms and legs are not always a sign of illness. Convex vessels on the palms may appear due to hard work or physical activity during sports. At the same time, the amount of the subcutaneous fat layer is minimized, and the vessels on the hands become clearly visible to the naked eye.

Blue veins on the chest appear in women during pregnancy and breastfeeding. This is due to the activation of blood flow in the mammary glands. Such transient hormonal changes disappear after cessation of lactation.

In such situations, when protruding blue veins on the arms, legs and chest are normal, no treatment is needed. It is not entirely correct to independently verify that there is no disease, referring to the photos found on the Internet. It is optimal to contact a phlebologist who can dispel all doubts, make a diagnosis and, if necessary, prescribe treatment.

How to recognize a vascular problem "in person"

Of course, there are situations when blue veins scattered throughout the body are a sign of their varicose veins. Abnormal vasodilatation can occur in various places:

• Blue protruding veins on the lips and face appear due to their varicose expansion after an injury or bruise.
• Dilated and protruding veins on the penis speak of varicose changes in the vessels of this organ.
• Varicose veins in the arms are rare, can occur after a fracture, as well as in the presence of a hereditary predisposition.
• Most often pathological change venous vessels in the legs are affected. Dilated tortuous blue veins on the legs are a sure sign varicose disease.

After a fracture, varicose veins in the arms may occur.

Manifestations of varicose veins of the lower extremities can be very different. We will try to consider in detail external characteristics manifestations depending on the stage of the disease:

• The first symptoms of varicose veins are spider veins. This phenomenon is caused local extension superficial vessels and looks like a small blue spot on the thigh or lower leg. Gradually, as the disease progresses, there are more such spots.
• Large blue spots on the legs indicate further development varicose disease. Sometimes these spots have a red-burgundy hue. This is due to the expansion of the subcutaneous network with the failure of the valve apparatus of the veins. With such problems, especially if they are accompanied by swelling and pain in the legs, specialist advice and specific treatment is necessary.
• Tortuous, thickened, protruding blue veins on the skin of the legs leave no doubt - this is varicose veins in the most characteristic of its manifestations.

At the initial stage, varicose veins appear in the form of a spider vein.

Blue spots on the toenails are sometimes also misinterpreted in favor of varicose veins. But this is far from the case: the nail in this case has nothing to do with vascular disease. Such color changes appear due to a bruise or injury. The blood poured out under the nail forms a bruise - a blue hematoma.

How to deal with the problem

Many patients, especially women young age, attentive to their body, when they find protruding veins on their arms or legs, they immediately ask themselves what to do in such a situation. If protruding vessels in the arms, legs, or chest are simply anatomical or physiological features, no treatment is needed. Sometimes visually noticeable blue veins on the hands become a cosmetic problem. In such a situation, at the request of the patient, one of the minimally invasive interventions can be performed: laser coagulation or sclerosis of venous vessels.

If the blue veins are on lower limbs appear due to varicose veins, it is impossible to do without appropriate therapy. With the question of how to remove such veins, a phlebologist will best help. Reduce blue spots spider veins on the early stages varicose veins will help lifestyle correction:

• It is necessary to give the legs more rest, if possible, keep them in an elevated position as often as possible.
• Moderate physical exercise help to strengthen and increase the elasticity of the venous wall.
• Application of special compression stockings promotes external compression of superficial veins and optimizes the outflow of blood from the legs.

If the veins in the legs are large and the disease is in an advanced stage, the doctor may suggest the use of drugs with a venotonic effect. Blockage of abnormal blood flow pathways is possible through sclerotherapy, laser coagulation, or endoscopic ligation of incompetent veins. Treatment and its tactics are determined depending on the specific clinical situation.

On the initial stages appearance, you need to give your legs more rest.

Traditional medicine also offers many solutions and answers to the question of how to remove blue dilated veins scattered throughout the body or localized in one place on the arm or leg. The following remedies can help reduce bulging veins in the legs or arms:

• Medicines based on horse chestnut - they can be both pharmacy and homemade. In the manufacture of preparations, crushed dried chestnut fruits are mainly used.
• Iodine is widely known for its decongestant and venotonic action. Self-made iodized starch is applied in the form of a mesh on the legs in the area of ​​varicose veins. The remedy can be prepared at home from water, potato starch, citric acid and iodine.
• Ointments based on honey will also help get rid of venous problems on foot.
• Infusions from various herbs, including lemon balm, St. John's wort, yarrow, have a known venotonic effect.
• Other types of medicinal raw materials - laundry soap, carrot tops, ginger root.

In the advanced stages of the disease, it is worth taking drugs with a venotonic effect.

The use of such funds is always better to coordinate with your doctor, since thoughtless self-medication can lead to complications. It would be optimal to spend several hours demonstrating your protruding blue veins to a phlebologist. He will advise you competently on what to do in this situation.

Enlarged blue veins located on the legs or scattered throughout the body disturb the peace of more than one hundred patients with their appearance. This seems to be due to the obvious cosmetic defects and misunderstanding of the essence of what is happening. Starting treatment based on your own guesses is an erroneous tactic. A consultation with a doctor will help answer all your questions and determine further tactics.

What you will not find on the net. Even the question of the color of blood and veins is often accompanied by assumptions and fiction, although most people actually know the answer to it. Yes, everything is simple here - the blood is red, only of different shades, depending on the amount of hemoglobin in it and oxygen enrichment. Everything as biology and BJD teaches at school: arterial blood (rich in oxygen coming from the heart) bright scarlet color, a venous(given oxygen to the organs, returning to the heart) - dark red(burgundy). The veins that are visible from under the skin are also red when blood runs through them inside. After all, on their own blood vessels transparent enough. But still, many people have questions such as “Why is blood different color and what does it depend on? and "Why are veins blue or blue?".

The red color of blood can have different shades. Oxygen carriers, that is, red blood cells (red blood cells), have a shade of red depending on hemoglobin, an iron-containing protein in them that can bind with oxygen and carbon dioxide to carry them to the right place. The more oxygen molecules attached to hemoglobin, the brighter the red color of the blood. Therefore, arterial blood, which has just been enriched with oxygen, is so bright red. After the release of oxygen to the cells of the body, the color of the blood changes to dark red (burgundy) - such blood is called venous.

Of course, there are other cells in the blood besides red blood cells. These are also leukocytes (white blood cells) and platelets. But they are not in such a significant amount compared to red blood cells to affect the color of the blood.

Blood color in anemia and cyanosis

In fact, of course, although the veins carry dark burgundy blood, unlike the bright scarlet arterial blood, they are by no means blue in color. They are red, like the color of the blood that flows through them. And do not believe in the theory that can be found on the Internet that the blood actually runs through the vessels is blue, and when cut and in contact with air it becomes instantly red - this is not so. Blood is always red, and why is described above in the article.

The veins only appear blue to us. This is due to the laws of physics about the reflection of light and our perception. When a beam of light hits the body, the skin beats off part of all the waves and therefore looks light, well, or different, depending on melanin. But she misses the blue spectrum worse than the red one. But the vein itself, or rather the blood, absorbs light of all wavelengths (but less, in the red part of the spectrum). That is, it turns out that the skin gives us visibility Blue colour, and the vein itself is red. But, interestingly, in fact, the vein reflects even a little more red than the skin. blue spectrum Sveta. But why then do we see veins blue or light blue? And the reason, in fact, lies in our perception - the brain compares the color of a blood vessel against a bright and warm skin tone, and as a result shows us blue.

Why do we not see other vessels through which blood flows?

If the blood vessel is closer than 0.5 mm to the skin surface, then it generally absorbs almost all blue light, and beats off much more red light - the skin looks healthy pink (ruddy). If the vessel is much deeper than 0.5 mm, then it is simply not visible, because the light does not reach it. Therefore, it turns out that we see the veins, which are approximately located at a distance of 0.5 mm from the surface of the skin, and why they are blue has already been described above.

Why can't we see arteries from under the skin?

In fact, about two-thirds of the blood volume is in the veins at all times, therefore, they bigger size than other vessels. In addition, arteries have much thicker walls than veins, because they have to withstand more pressure, which also prevents them from being sufficiently transparent. But even if the arteries were visible from under the skin as well as some veins, it is assumed that they would have approximately the same color, despite the fact that the blood running through them is brighter.

What is the actual color of a vein?

If you've ever cooked meat, you probably already know the answer to this question. Empty blood vessels are reddish-brown in color. There is not much difference in color between arteries and veins. They differ mainly when viewed in cross section. Arteries are thick-walled and muscular, while veins have thin walls.

As for the aristocrats, the expression "blue blood" appeared due to the pallor of their skin. Until the twentieth century, tanning was not in vogue, and the aristocrats themselves, especially women, hid from the sun, which protected their skin from premature aging and looked according to their status, that is, they differed from the serfs who “plowed” all day in the sun. Now we understand that pale color skin with a blue tint is actually a sign of less health.

But scientists also claim that there are about 7,000 people in the world whose blood has a blue tint. They are called kyanetics (from lat. cyanea - blue). The reason for this is not such hemoglobin. In them, this protein contains more copper than iron, which, during oxidation, acquires a blue tint instead of the usual red for us. These people are considered to be more resistant to many diseases and even injuries, as they say that their blood clots several times faster and is not exposed to many infections. In addition, there are various theories about the origin of Kyanetics, including that they are descendants of aliens. There is not much information about them on the net, but there are articles from foreign publications where the birth of such children is explained by the abuse of contraceptive drugs long before conception. As they say, “Don’t smoke, girl, the children will be green!”, And it can turn out blue from contraceptives (meaning the color of blood).

Such a pathology as blue veins on the legs occurs in recent times quite often in many people. This, in turn, led to the development various methods eliminate this disease. This can be done both conservatively and surgical methods. Before treatment, be sure to consult with your doctor.

Medicines for the treatment of venous vessels of the legs

If the veins on the legs turn blue and swell, no folk recipes will not help in their treatment. In this case, you should take medications. It is important to understand that any drug has its own by-products and contraindications. That is why you need to be extremely careful and careful, clearly following the instructions for use and the recommendations of doctors.

Among the most popular and effective medicines with varicose veins, it is worth highlighting the following:

• Detralex;
• Phlebodia;
• Aescusan;
• Venoruton;
• Antitraks;
• Venarus;
• Aspirin etc.

Mostly blue veins are treated with the above tablets, but they do not eliminate the causes of the pathology. In most cases, they eliminate the symptoms of the disease, and also significantly improve general condition health. Most often on early stages problems with blood vessels, it is worth using just such methods of therapy, and not more radical methods.

Creams and ointments

Systemic treatment of varicose veins should also be supported by local therapy. It includes the use of such classes of medicines as gels, ointments, creams, etc. They are applied directly to the affected areas of the veins and help reduce certain symptoms diseases.

Blue veins in the early stages can be eliminated with the following medications:

• Heparin ointment;
• Vishnevsky ointment;
• Troxevasin;
• Venoruton;
• Hepatrombin;
• Varicobooster etc.

Remedy for varicose veins Varius

The latest development Russian specialists, has the fastest possible effect - after 1-2 courses, significant improvements occur even at an advanced stage of varicose veins. The formula is based on native plant extracts, and therefore is available without a doctor's prescription. It is usually impossible to buy a drug with such a strong effect without a prescription.

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Wear compression stockings

Blue veins on the legs require that the treatment be carried out comprehensively and comprehensively. That is, in addition to the tablets and ointments themselves, it is worth using a special knitted compression underwear. It exerts a certain pressure on the lower leg of a person, which prevents stagnation of blood, and also improves its flow through the vessels. In this way, she can easily get back to her heart.

It is worth noting that compression underwear should be prescribed by the attending physician. You can't use it on your own without need. In addition, a specialist can choose the appropriate class of knitwear that will best cope with the existing problem.

Alternative methods of treating veins

There are also alternative methods therapy for varicose veins. First of all, it concerns various ways the fight against this disease, created on the basis of observations traditional healers. It is necessary to pay attention to the fact that any folk recipe is unable to completely replace the action of a tablet or ointment. That is why it is worth using such techniques only as an additional, and not the main means of treatment.

To prevent the legs from turning blue, you can use the following alternative therapy recipes:

1. Funds based on horse chestnut. They can be purchased, both in some pharmacies, and will be made at home. To prepare the medicine, it is worth without fail finely chop the fruits of the tree.
2. Means based on iodine. First of all, the application of iodine starch with a mesh in the areas of vascular lesions is popular. For its preparation, it is worth additionally using citric acid with water.
3. Homemade ointments based on honey and bee products.
4. Infusions from various medicinal herbs. First of all, this applies to lemon balm, St. John's wort, Yerowort, yarrow and other plants.

Any folk remedy may cause some side effects. Therefore, before using it, you should consult your doctor. But mostly the recipes of craftsmen do not lead to adverse effects, as a result of which women give preference to them in order to give birth without problems. This is due to the fact that pregnancy often provokes an exacerbation or the occurrence of varicose veins.

What can a surgeon or phlebologist do

A phlebologist is a surgeon who specializes in diseases and pathologies. vascular system person. This profession is quite new, since recently the number of patients with diseases of the arteries and veins has increased significantly.

A surgeon or phlebologist can not only advise the patient or examine him, but also treat the disease. First of all, this applies to one-day surgery, when the patient is operated on and allowed to go home for rehabilitation in just a couple of hours.

In most cases, phlebologists perform laser coagulation and sclerotherapy. These methods are the most popular. Thin veins on the legs can be easily corrected by these specialists by returning them to the correct diameter.

Most often, phlebologists perform operations under local anesthesia, but together with the appropriate team, they can carry out the elimination of the consequences of the disease and under general anesthesia patient.

Surgery

An operation is required for a patient with varicose veins only for final stages the development of the disease. Recently, this does not happen very often due to the consciousness of patients and timely treatment to medical institutions.

Among surgical methods treatment carried out only by a doctor in an inpatient or outpatient settings, it is worth highlighting such methods of treating varicose veins:

• phlebectomy;
• laser coagulation;
• radiofrequency ablation;
• sclerotherapy.

With the help of the operation, it is possible to remove the affected veins or their sections, thereby transferring the blood flow to healthy vessels.

Sclerotherapy

Getting rid of veins affected by varicose veins can be quite simple with the help of such a treatment method as sclerotherapy. This is a fairly old method that has proven to be effective. Held from predominantly on the background ultrasound vessels.

Most often, to no side effects sclerotherapy does not. Immediately after treatment, the patient can return to their usual way of life. To be in stationary conditions after such interference not required.

The essence of the method of sclerotherapy lies in the fact that the blue is thin up to 10 mm. the vessel is injected with a special substance that sticks together its walls. The cause of the disease is not eliminated in this way. But at the same time, the vein ceases to function, as a result of which the blood flow begins to occur through healthy vessels.

Preventive measures

To eliminate the need for vascular treatment, it is only necessary to correctly perform some preventive measures, excluding the progression or occurrence of varicose veins. Among them it is worth highlighting the following:

1. It is worth doing moderate physical activity. This applies to walking, gymnastics, sports, warm-ups, etc.
2. Nutrition should be complete and balanced.
3. It is necessary to stop smoking and drinking alcohol-containing drinks.
4. Work must be interspersed with periods of rest.
5. Need to lead active image life, etc.

By following the above rules, you can prevent the need to visit the hospital for vascular problems.

Do you still think that getting rid of varicose veins is difficult?

The advanced stage of the disease can cause irreversible consequences such as: gangrene, blood poisoning. Often a person's life running stage can only be saved by amputation of a limb.

In no case should you start the disease!

This issue was most fully investigated by German scientists, who identified three main factors that determine visible blue light.

1) Absorption of light by blood

2) Reflection of light from the skin

3) Color perception by our brain (dress, hello!)

The most blue veins appear on fair skin (hence " blue blood"), the color of which is due to the fact that it weakly absorbs light of any wavelength.

Blood, on the contrary, perfectly absorbs light, especially in the short and medium wavelengths, that is, the red color is slightly worse, and therefore we see it as red.

So, the color of all wavelengths falls on the skin. Red light possessing greater length waves, will penetrate the tissues better, plus, it will be reflected by the vessels encountered. Our eye will see the picture that the light reflected from our tissues will give us.

Thus, if the vessel is located close to the surface of the skin, then almost all of the blue light is absorbed by the blood in the vessel, and part of the red is reflected -...

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What you will not find on the net. Even the question of the color of blood and veins is often accompanied by assumptions and fiction, although most people actually know the answer to it. Yes, everything is simple here - the blood is red, only of different shades, depending on the amount of hemoglobin in it and oxygen enrichment. Everything is taught by biology and BJD at school: arterial blood (rich in oxygen, coming from the heart) is bright scarlet in color, and venous blood (which has given oxygen to the organs, returning to the heart) is dark red (burgundy). The veins that are visible from under the skin are also red when blood runs through them inside. After all, the blood vessels themselves are quite transparent. But still, many people have questions such as “Why does blood come in different colors and what does it depend on?” and "Why are veins blue or blue?".

What determines the color of blood?

The red color of blood can have different shades. Oxygen carriers, that is, erythrocytes (red blood cells), have a shade of red in ...

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Why are veins blue?

Venous blood (in the photo it is in the right vial *) is dark red (crimson). Veins are blue. How can this be?

There is even an assumption that venous blood is actually blue, and it only turns red when it flows out and comes into contact with air. This, of course, is not true: when blood is taken from your vein in a hospital, the blood does not come into contact with air - but it is still red.

Let's follow the flight of the sun's rays

1) The rays of the Sun hit the skin, pass through the skin, through the subcutaneous fatty tissue, through the wall of the vein - and reach the venous blood.

2) The rays of the Sun contain the seven colors of the rainbow. Venous blood has a purple (red + blue + yellow) color, so it reflects these three colors, and absorbs all other colors.

3) Red, blue and yellow rays reflected by blood move back: they pass through the wall of the vein, subcutaneous fatty tissue, skin - and enter our eye.

The trick here is...

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This is explained simply by two things. First, there are red blood cells containing hemoglobin in the blood. It carries oxygen and, in the process of capturing molecules, oxidizes and becomes bright red. Hemoglobin containing oxygen is called oxyhemoglobin. It flows through the arteries, branching into many capillaries, where it is given to the cells of the body. This makes the hemoglobin turn purple-blue, which is why the veins look like that. If you take blood from a vein, then it, in contact with air, instantly becomes red again.

Secondly, the skin absorbs approximately 50 percent of the red wavelengths and returns the rest back, while the blue wavelengths absorb only 30%. That's why the veins look blue.

The veins of the extremities are of particular importance, since the arms and legs require a good supply of oxygen, as they are the most active parts of the body. Distinguish between superficial and deep veins. Deep - these are paired veins that accompany the arteries of the fingers, ...

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Blood in the human body circulates in a closed system. The main function of the biological fluid is to provide cells with oxygen and nutrients and output carbon dioxide and products of exchange.

A little about the circulatory system

The human circulatory system has complex device, biological fluid circulates in small and big circle circulation.

The heart, acting as a pump, consists of four sections - two ventricles and two atria (left and right). Vessels that carry blood away from the heart are called arteries, and those that carry blood to the heart are called veins. Arterial is enriched with oxygen, venous - with carbon dioxide.

Thanks to interventricular septum, venous blood, which is located in the right side of the heart, does not mix with arterial blood, which is in the right section. Valves located between the ventricles and atria and between the ventricles and arteries prevent it from flowing in the opposite direction, that is, from the major artery(aorta) to the ventricle, and from the ventricle to ...

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If blood is red, why are veins blue?

(Asked by E. Perrins, Eastwood, New South Wales, Australia)

As mentioned above, red blood cells, which occupy about 40% of the blood, contain hemoglobin. As red blood cells pass through the lungs, hemoglobin grabs oxygen and binds to it, causing it to turn bright red. The term "oxyhemoglobin" is used to refer to hemoglobin combined with oxygen. Oxyhemoglobin is pumped from the heart through the arteries. Red blood cells containing oxyhemoglobin then enter the capillaries, where they give oxygen to other tissues. After hemoglobin loses oxygen, it turns purple-blue, and then it is called deoxyhemoglobin. On its way back to the heart, deoxyhemoglobin travels through veins, which appear blue through the skin. However, if blood is drawn from a vein, it will react with the oxygen in the air and immediately turn red.

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2014-11-18
When we say "Blue Bloods" we mean people of royal lineage. Documentally, this term originated in 1834 in Spain. There is a myth that this phrase describes a condition caused by a rare genetic defect that is common among the royal families of Europe, due to their habit of marrying and marrying only members of other European noble families. This interbreeding led to the development of a disease called "hemophilia", which in turn gave rise to the phrase "blue blood".

Queen Victoria was indeed genetically prone to hemophilia. She was nicknamed "The Grandmother of Europe" thanks to a large number children and grandchildren in royal houses throughout Europe. All this contributed to the spread of this gene.

A significant shortcoming of this theory is that hemophilia does not make the blood blue. It simply means that the body lacks certain substances in the blood that help blood clot. Depending on the type of hemophilia, the blood...

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How does the human heart begin to beat? Is it true that the younger a person is, the faster his heart beats? Why is the heart constantly beating? Does listening to music really calm the heart? Can a person continue to live when the heart stops beating? What is cholesterol? What is the difference between "good" cholesterol and "bad" cholesterol? What is the difference between diastolic arterial pressure from systolic? Can you stop your pulse? What heart attack? Is there a heart rate limit in a lifetime? What is heartburn? What is bypass surgery? Can the heart be on the right? Does the heart have its own circulatory system? Why doesn't blood freeze on very cold days? How much blood is in my body? What is plasma? What are platelets? What is the importance of red and white blood cells? If blood is red, why are veins blue? What is anemia? Where is the spleen located and what is its function? Is it possible to live without...

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Blood is a combination of many substances - plasma and shaped elements. Each element has strictly defined functions and tasks, certain particles also have a pronounced pigment, which determines the blood color. Why is human blood red? The pigment contained in hemoglobin is red, it is part of the erythrocyte. It is for this reason that there are organisms on Earth (scorpions, spiders, monkfish) whose blood color is blue or green. Their hemoglobin is dominated by copper or iron, giving the characteristic color of the blood.

To understand all these elements that fill the blood, it is necessary to understand its composition.

Composition of the blood

Plasma

As already mentioned, one of the components of blood is plasma. It takes up about half of the blood composition. Blood plasma brings blood into a liquid state, has a light yellow color and is somewhat denser than water in its properties. Plasma density is provided by substances dissolved in it: antibodies, ...

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Even though each person's appearance is unique, general structure people's bodies differ little from each other. For example, we all have five fingers on our hands (of course, except for the rarest exceptions) or feet. Or look at your veins - what color are they? Probably greenish-blue, like many others. It is a completely different question why they are of this particular shade, because the blood is red, which means that the veins should be the same color. But not everything is so simple.
The fact is that the blood flowing through the veins contains a certain amount of carbon dioxide, which, when mixed with other components, colors it in dark color. Since the skin and walls of the veins add some distortion, they end up looking bluish to us. According to another theory, the whole thing lies in the fatty layer between the dermis and fascia, which absorbs low-frequency light that penetrates the dark vein and reflects the blue wavelength.
You can even conduct an appropriate experiment. This requires...

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The blood in them is not red - it is just so bluish, because it has given its oxygen to the body. Red blood is in the ARTERIES. Those. the body has two systems - inflow and outflow of blood, involved in the delivery of oxygen .. So far blood is coming from the lungs - it is scarlet. When he gives up oxygen, the color changes .. but in general, I should have taught biology at school ..% -) (Of course, not so "blue" blood, first of all - it's just dark. :-))

Well, I don't want to check, but as far as I know, if you open the veins, it will pour out a dark red, not blue at all. And here they are wreaths, naturally blue, not purple. So you didn’t convince me personally, I don’t know how the author of the post :)))))))))

Well, you don’t take me for an ignoramus at all. It is clear to horses that the blood in the veins is venous, and that it is not rich in oxygen. However, venous blood is not BLUE. If you soon vein yourself, you will see that the blood, although excellent ...

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The veins that are visible from under the skin are also red when blood runs through them inside. But still, many people have questions such as “Why does blood come in different colors and what does it depend on? And “Why are veins blue or blue? In anatomy atlases, veins are symbolically indicated in blue. If you look at a vein filled with blood, it will appear bluish.

It is now from the variety of children's scooters that the same Razor run up: there is even one that any adult will envy. This natural mechanism is a "spare" in case high temperature environment causing crying instead of cold.

If you heat for less than 5 minutes, then during the day you can heat up to 4 times. If bruising occurs at the pinch site, fragility of the vessels takes place. The land of Nod in Cyprus cannot be for any reason, simply because of geography: "And Cain went away from the presence of the Lord and settled in the land of Nod, to the east of Eden" (Gen.

Increased blood clotting (condition, ...

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Through which vessels does more dark blood how does the circulatory system work

The constant movement of blood in a closed circuit cardiovascular system, which provides gas exchange in tissues and lungs, is called blood circulation. In addition to saturating the organs with oxygen, as well as cleansing them of carbon dioxide, blood circulation is responsible for delivering all the necessary substances to the cells.

Everyone knows that blood is venous and arterial. In this article, you will find out through which vessels darker blood moves, find out what is included in this biological fluid.

This system includes blood vessels that permeate all tissues of the body and the heart. The process of blood circulation begins in the tissues where metabolic processes through capillary walls.

The blood, which has given away all the useful substances, flows first to the right half of the heart, and then to the pulmonary circulation. There, she enriched herself useful substances, moves to...

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