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08/19/2016
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How much blood in man

How much blood in man

Each person is different, not only in terms of appearance, psychology, behavioral responses, but also in terms of physiology.

In many ways, especially the body determines the nominal volume of blood in it and its composition.


Blood - is a physiological substance thatcontinuously circulates in the human body. Thanks to her, carried out transportation of nutrients to the vital organs of oxygen saturation, the functioning of all systems, including the respiratory system. In addition, the blood distributes heat and helps the body maintain the immune system.

Natural blood volume

Every human body is different, the amount ofblood circulating through the vessels, large and small arteries, at all different. But the average human body contains about 4.5 to 6 liters of blood. This rate depends primarily on body weight. That is, the specified amount is a certain percentage of the equivalent of approximately 8% of body weight.
In the body, blood child contains substantially less than an adult, its amount depends on the age and weight.
We can not lose sight of that amount is constantlylocated in the body of blood varies depending on factors such as fluid consumption. The number of the blood and affect the level of water absorption, for example, through the intestines. Furthermore, the amount of blood in the organism depends on what the person is doing, to the activity: the passive person, the minimal amount of blood required for the life of him.
Abundant blood loss, namely 50% or more (thisis approximately 2-3 liters) in 98 cases out of 100 leads to the death of a person. In some cases, as a result of this blood loss can occur serious diseases, such as anemia, local necrosis, disorders of brain activity.

Restores blood

To make up for lost blood by the bodydoctors used a number of activities, one of which is a blood transfusion. This is of great importance and Rh group of the patient and the recipient (the donor). It is known that blood is heterogeneous, 60% of its membership - it is plasma, the most important substance that makes up the doctors and transfusion, ie overflows are not actually blood, plasma, suitable for physiological characteristics.
With a lack of plasma or need itpurification (for example, after intoxication) using sodium chloride composition that does not carry useful elements characteristic of the blood, but has the ability to perform transport functions in the body, and transferring at least a small amount of red blood cells, platelets and so on.

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