If a large amount of black blood is transfused into the human body, will the skin turn black?

No, in addition to being born "dark", people also have many acquired factors, such as basking in the sun.

I don't think black people have much to do with their blood.

Adrenocorticotropic hormone can usually inhibit the pituitary gland to promote the secretion of melanocyte hormone, but if the adrenocortical hormone content is too high, it will have the opposite effect and increase melanin;

Melanin is distributed in epidermal keratinocytes, carotene is distributed in the stratum corneum and subcutaneous fat layer of the epidermis, and hemoglobin is distributed in the dermis.

Frequent exposure to the sun, the ultraviolet rays in the sun will accelerate the oxidation and synthesis of melanin by tyrosinase, increase the amount of melanin, and the melanin will move layer by layer in the epidermis, and eventually form sunspots and dark spots on the **;

Anatomical differences, mainly the thinness of the stratum corneum and granular layers. When light is scattered on different thicknesses, the color of the skin surface will also change.

If you haven't checked it, you should check it out, and he is still a little anemic, I don't know if it has something to do with it. It's better to go to the hospital to have a look.

When there is bruising, it is black or black blood clots

What exactly is the composition that makes blood red?

The collected blood can be easily separated into a red solid component and a yellow-brown liquid component by adding an anticoagulant and using a centrifugal separator.

called plasma). Obviously, the red component is present in the solid component. When the solid component is viewed under the microscope, it can be seen that it is a mixture of three different thin trots.

They are called red blood cells, white blood cells, and platelets, respectively. In the volume of 1 cubic millimeter of blood, the concentrations in which they exist are 450-5oo, 6oo-8o00 and 3o-5o, respectively. According to the difference in the specific gravity of these cell components, the precision centrifugal separation method was used to further separate, and it can be seen that the red components are present in the red blood cells.

Distilled water is added to the red blood cell layer to allow water to penetrate into the blood cells due to the difference in osmotic pressure between the inside and outside of the cells, which are separated by the red blood cell membrane. As the pressure inside the cell increases, eventually leading to the rupture of the membrane, the contents of the cell are dissolved into the outer fluid (called hemolysis). This liquid is then treated with a centrifugal separator to obtain a red, transparent supernatant (called hemolytic) and a very small amount of precipitate.

The sediment is the remains of the red blood cell membrane, and since it becomes lighter when it is washed with saline, the problem with the red component is ultimately due to hemolysis.

The dissolved blood is dialyzed with a semi-permeable membrane, and the red component does not penetrate outward, so it can be seen that the red component is a polymer substance. When separation methods such as salting-out method are used to separate polymers in the dissolved blood, the main thing obtained is the red protein, and there are also trace amounts of enzymes related to the metabolism of red blood cells. The red protein is called hemoglobin (used below.

h6), which is the red component of the blood that we are looking for.

In cells, the concentration of H6 is as high as 35, and in the blood as a whole, it is about 15%. As we all know, H6 plays an important role in the transport of carbon dioxide in addition to the role of oxygen transport in the body. Oxyhemoglobin is red, and deoxyhemoglobin is purplish-red. The red blood, dyed by this H6 color, circulates through all the ridges pushing the object.

H6 is a complex of a protein called a protein called a protein and a low-molecular-weight iron called heme, which is the color of blood.

The aging red scarf is destroyed by the liver, etc., and H6 is also decomposed. Urobilinogen and urobiliin, which are products of heme breakdown, are excreted into the body as components of the stool. The yellowish-brown color of feces is the first of these substances.

It's a bit unfair to ask why the blood is red and not why the feces are yellow-brown.

The blood doesn't have to be all red, either. The blood of molluscs and arthropods is blue (with exceptions) because the blood lymph of these animals dissolves a blue steel protein called hemocyanin, which also plays a role in transporting oxygen.

If the blood is black in color, if it is not poisoned, it is caused by the blood being too thick and viscous.

The reason for this is that yin deficiency and internal heat are too much and blood fever is caused. This situation needs to be paid attention to, because the blood is thick and black, and the viscosity is mostly the precursor of the three highs, which is caused by yin deficiency and internal heat, and the liver fire is too strong, so it should be quickly nourished and the heat should be reduced. As long as the internal fire is not strong and the internal heat is not serious, the blood will not be viscous and black, and the concentration will be large.

Here's how to solve the problem:

Drink plenty of water every day, and your blood will not be black or sticky.

Don't eat hot foods, such as greasy, meaty, and spicy, including alcohol! And the diet should be light, mainly cold food.

Eat more watermelon. Pay attention to go to bed early and wake up early, and don't stay up late. It can nourish the liver and kidneys, so that metabolism can be carried out, so as to replace the waste black viscous blood. And going to bed early and waking up early can also make the internal fire less likely to start.

Drinking raw cassia water (10 grams of raw rehmannia and 10 soaking water of cassia seeds) every day can nourish yin and reduce heat, cool blood and remove internal fire.

In different blood vessels, blood has two colors: bright red and purplish-red, depending on the amount of oxygen it contains. When enough oxygen is absorbed in the lungs, the blood is bright red, and when the blood sends oxygen to all parts of the body, the oxygen decreases and the color becomes purple.

This purple blood turns cyan through the ** and blood vessel walls on the hands and feet. Bright red blood containing a lot of oxygen is deep in the blood vessels of **, and this blood vessel is not visible from the outside.

Another way of saying it.

When you look at something through a colored cellophane, the color of the object becomes different from the original color. In the same way, the blood vessels that we can see from the ** are veins, and the blood flowing in the veins is dark red, and this dark red is covered by a layer of yellow **, so it looks blue-green.

Although the blood is red, the blood vessels are different from the blood, and the blood vessels look green.

How so? To use an analogy, if you take a yellow rubber hose and put it on the tap, you say, "Huh? Tap water is obviously colorless! Why do water pipes look yellow?

In fact, yellow is the color of the water pipe, and the solution inside the root is not related.

Like our blood vessels, although they are loaded with red blood, they are made up of endothelial cells and some connective tissue, of course, they have their own color.

Human blood is made up of a small amount of platelets, plasma, white blood cells and a large number of red blood cells, because the amount of red blood cells is relatively large and red, so human blood is red, not black Yes.

Blood that loses oxygen is dark black, and sometimes some lesions can also turn the blood black.

Humans have known for a long time that blood is red, and they also know that blood is important to people, and if the blood is exhausted, people will die. Blood is so important to human life, so in human language, there are also rich words about blood, such as blood and qi, blood boiling, heart-wrenching and so on. So, why is blood red?

This is because the red blood cells that flow through the blood vessels are the main component of blood, accounting for about 50% of the total blood volume. So, when these red blood cells are suspended in the plasma, the blood becomes red.

The main component of red blood cells is a substance called hemoglobin, an iron-binding protein composed of globulins and heme, the key part of which is heme, which carries oxygen molecules. Since each red blood cell has four heme-containing molecules, one red blood cell can carry four oxygen molecules. The color of red blood cells varies slightly depending on the amount of oxygen they have.

The amount of oxygen contained in our human blood is one of the key factors that determine the color of blood. Arterial blood is bright red in color because of its high oxygen content; Venous blood contains less oxygen, so it is dark red in color. When we accidentally scratch **.

From the wound, a red liquid comes out, which is the blood of our body.

Normally, the blood we see with the bloody eye is red, however, if we look at it with a microscope, the color of the blood seems to have changed, and it is no longer bright red, but pale yellow. Why? It starts with the composition of the blood.

Blood is made up of cellular parts and non-cellular parts The cellular parts include red blood cells, white blood cells, and platelets; The non-cellular part is plasma. The main components of plasma are water, amino acids, sugars, lipids, vitamins, inorganic salts, etc. Under the microscope, the blood cells in the blood are not as dense as they can be seen with the naked eye, and the yellowish plasma becomes the background color of our vision.

Blood is one of the most important components of the human body. It accounts for about 8 of an adult's body weight, which is equivalent to 70 80 milliliters of blood per kilogram of body weight, which means that an adult weighing 60 kilograms has about 4500 milliliters of blood in his body.

Most animals have red blood, however, there are a few animals that do not have red blood. For example, there is an animal called the horseshoe crab that lives at the bottom of the deep sea, and its blood is blue. This is because the main component in their red blood cells is a hemocyanin rather than hemoglobin, which contains copper and is blue-green, so it is also called ceruloplasmin.

Of course, the blood is blue. In the mountains of northwestern Africa, there is also a green race that lives a primitive life. Explorers reported that the total number of such green people was less than three thousand, and several thousand were extinct.

They live a burrowing life, and it is said that these green people are not only as green as leaves, but even their blood is green.