What color is blood in the body and what color is a person s blood

The normal color of blood is red, because the blood contains a large number of red blood cells, and the red blood cells contain blood red, and the blood red is red, so the blood appears red. At the same time, according to the different oxygen concentration in the blood, the blood is divided into venous blood and arterial blood, the oxygen content in the venous blood is lower, the blood is dark red, and the oxygen content in the arterial blood is higher, and the blood is bright red. There are also patients with anemia, due to the decrease in the number of red blood cells, the concentration of hemoglobin decreases, the patient's blood is reddish, and the more severe the anemia, the lighter the color of the blood.

Red. Blood is a red, opaque, viscous fluid that flows through a person's blood vessels and heart. Hemoglobin is bright red when it contains more oxygen (arterial blood) and dark red when it contains less oxygen (venous blood).

Among the many indicators reflecting the rheological properties of blood, blood viscosity, plasma viscosity, red blood cell aggregation and deformability occupy an important position, and have been widely used in clinical testing. From the perspective of rheology, in addition to the above-mentioned commonly used indicators, the thixotropy and viscoelastic indexes of blood can better reflect the non-Newtonian characteristics of blood, and can also provide more valuable information for the clinical diagnosis of certain diseases.

Question 1: What color is normal human blood Hello, blood is a red, opaque viscous liquid that flows in people's blood vessels and heart. The color of the blood is different, the red color of the blood comes from the hemoglobin in the red blood cells, which is bright red when the oxygen content is high (arterial blood), and dark red when the oxygen content is low (venous blood).

Usually blood donation is drawn from venous blood, so the outside ** is dark red. If the blood contains more methemoglobin or other hemoglobin derivatives, it will be purple-black. Plasma (or serum) appears transparent and yellowish because it contains a small amount of bilirubin; If it contains chylomicrons, it is milky white and cloudy; If hemolysis occurs, it appears as red plasma.

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Question 2: What is the normal color of human blood Bright red, it will become dark red after a long time, and then black and red.

Question 3: What color is blood? Human arterial blood contains a lot of oxygen and is bright red. Human venous blood contains little oxygen and is purplish-red in color. The color of human blood is determined by red blood cells, which contain red hemoglobin, which makes the blood red.

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Question 4: What is the color of blood after death A person who has just died, like a normal person, turns black-red or black after some time.

Normal arterial blood should be bright red, and most of the blood seen is venous blood, which will be darker. There is chest tightness, and the reaction is a sign of insufficient blood supply to the heart. It can cause the blood to be dark in color.

The blood of the human body is mainly composed of plasma, blood cells, and blood cells include red blood cells, white blood cells, and platelets. The red blood cells that run through the blood vessels make up about half of the total blood volume and are suspended in the plasma, making the blood red.

The normal blood color should be red, there is a certain difference between the color of venous blood and arterial blood, the color of arterial blood is bright red, and the color of venous blood is dark red, and the bleeding is combined with arteriovenous blood during surgery, so it is different from the blood drawn, and the venous blood is generally drawn.

Blood is divided into arterial and venous blood. The arteries of the human body are mostly located in the deeper parts of the body, so it is not easy to see, and the blood flowing in the arteries is bright red because it contains more oxygen, so the blood that flows out of the arteries at the end of the arteries such as the earlobes or fingertips or ** trauma is often red or bright red, and the blood of patients with slight anemia is also bright red. Veins are generally distributed in the superficial parts of the body, such as the elbows, backs of the hands, thighs and feet, and are blue-purple, and the blood flowing in the veins is venous blood, and the venous blood is dull because it contains more carbon dioxide and other metabolites.

Blood tests are often drawn from a vein in your elbow, so the blood you see is often dark red or black-red, which can also indicate that your blood contains more red blood cells and hemoglobin. In addition, venous blood can be blackish-purple when hemoconcentrated or in patients with cor pulmonale.

When taking blood from peripheral parts such as fingertips, it is also possible to see that the blood is darker in color, similar to venous blood, because it is more than the end of the peripheral vein, or the concentration of hemoglobin is high, or the hemoconcentration is caused by factors such as hemoconcentration.