How many milliliters or grams is 400 milliliters of blood equivalent?

Cc stands for milliliter, and 400cc stands for 400 milliliter. 400cc of blood is about 420 grams. Blood is slightly heavier than water, and its relative density is about 1.05, which means that 1 volume of blood is equivalent to about 1.05 volume of water. 1 kg (1KG) is exactly the weight of one liter of water. 1 ml water is 1 g, 400g x1.05 = 420g.

Blood composition: most of the blood composition is water, and other substances needed by human metabolism, such as red blood cells, white blood cells, platelets, plasma, protein, sodium, potassium, hormones, enzymes, etc., use the relative density of blood: the so-called relative density of blood means taking the weight of the same volume of water as 1, which is the ratio with the quality of blood. The relative blood density of healthy people remains unchanged in a certain range, with males above 1.054 and females above 1.052. People whose relative blood density is lower than 1.055438+0 cannot donate blood.

Extended data:

The total blood volume of healthy people accounts for about 8% of body weight, and the metabolic activity of blood is very vigorous. The total blood volume of an adult is about 4000-5000 ml, and the blood donation of a healthy adult is 200-400 ml, accounting for only 5% of the total blood volume of the whole body. After blood donation, the body will automatically adjust, so that the blood flow can quickly return to normal, and at the same time stimulate the hematopoietic function of the body. Usually, 80% of the blood circulates in the heart and blood vessels, maintaining the normal physiological functions of the human body.

The remaining 20% blood is stored in the liver, spleen and other organs. Once blood loss or strenuous exercise occurs, blood will enter the blood circulation system. After donating blood, the blood stored in the body will immediately enter the body circulation, and will not reduce the circulating blood volume in the body. The water and inorganic matter lost after blood donation will return to normal level within 1-2 hours; Plasma protein, liver synthesis, can be supplemented in a day or two.

Platelets, white blood cells and red blood cells need corresponding periodic recovery. Platelets generally return to the level before blood donation in 2-3 days, while red blood cells and hemoglobin need 7- 10 days to return to the level before blood donation. The blood of human body is constantly metabolized. Many blood cells are aging and dying all the time, and at the same time, a large number of new cells are generated to maintain the balance of human metabolism.

References:

Baidu encyclopedia-blood donation