The red blood corpuscles( RBC) also called "erythrocyte" are round and disc-like cells, and are thinned out in the center, this cells are very small.
The red blood cells was formed in the bone marrow. In its young age, the red blood cells just like the other cells has a nucleus. When the red blood cells mature, the nucleus will disappear and then it leaves the bone marrow and goes to the blood stream.
The Red Blood Cells seen in diff. formations: a.)seen from surface b.) in profile c.)rendered spherical by water d.) rendered crenate by salt
Image via Wikipedia
The red blood corpuscles (RBC) also called “erythrocyte” are round and disc-like cells, and are thinned out in the center, this cells are very small.
They are very elastic and can be squeezed but can easily go back to its normal form. The “erythrocytes” are very tiny that 75 billion of them will be fitted in a tube with 2.5 centimetre in diameter. An estimated of 4.5 and 5.5 million of this red blood cells per cubic millimetre are present in the blood. It was said that the total surface area of the red blood cells in our blood is more than the size of entire football field.
The red blood cells serves as the special carrier of the blood. They deliver oxygen to the body tissues and body cells. They also pick up the waste and carbon dioxide from the cell.
In every red blood cells, there are about 200 million molecules of hemoglobin. Hemoglobin is the substance that contains iron and carries oxygen. The hemoglobin is also responsible for giving the cell its red color.
Antigens also present in the red blood cells. The antigens are proteins that use to determine blood type and are found in the red blood cells membrane.