Question

Describe three types of blood cells.​

Answer 1

Explanation:

1.Red blood cells

2.White blood cells

3.Platelets.

Answer 2

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Blood is actually a tissue. It is thick because it is made up of a variety of cells, each having a different job. In fact, blood is about 80% water and 20% solid.

The circulatory system is the route by which the cells in your body get the oxygen and nutrients they need, but blood is the actual carrier of the oxygen and nutrients. Blood is made mostly of plasma, which is a yellowish liquid that is 90% water. In addition to the water, plasma contains salts, sugar (glucose), and other substances. And, most important, plasma contains proteins that carry important nutrients to the body’s cells and strengthen the body’s immune system so it can fight off infection.

The average man has between 10 and 12 pints of blood in his body. The average woman has between 8 and 9 pints. To give you an idea of how much blood that is, 8 pints is equal to 1 gallon (think of a gallon of milk).

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There are 4 different blood types: A, B, AB, and O. Genes that you inherit from your parents (1 from your mother and 1 from your father) determine your blood type.

Blood is always being made by the cells inside your bones, so your body can usually replace any blood lost through small cuts or wounds. But when a lot of blood is lost through large wounds, it has to be replaced through a blood transfusion (blood donated by other people). In blood transfusions, the donor and recipient blood types must be compatible. People with type O blood are called universal donors, because they can donate blood to anyone, but they can only receive a transfusion from other people with type O blood.

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