Q- Describe the blood corpuscles of human blood.
Answer- Blood corpuscles are cells floating in the blood plasma. The blood corpuscles are divided into two types. These are as follows:
1. Erythrocytes: Erythrocytes or red blood corpuscles are circular, biconcave as well as denucleated. The red is about 7.5 μm in size. The red blood corpuscles are more in number as compared to white blood corpuscles. The red blood corpuscles are about 5 million per milimetre cube. Each red blood corpuscles has no nucleus and very less cell organelles.
The main function of red blood corpuscles is that ir helps in transportation of oxygen and nutrients to all parts of the body.
2. Leucocytes: Leucocytes or white blood corpuscles are amoeboid, nucleated and whitish blood corpuscles. The white blood corpuscles are large in size about 8-15 μm. The white blood corpuscles are about 7000 per milimetre cube in number.
The main function of white blood corpuscles is that it secretes antibodies to provide immunity.
3. Platelets: The blood platelets are small sized bodies. They are about 2-3 μm. These are oval shaped fragments in blood that helps in clotting blood. If any part of body get injured and blood started flowing or mobving out so at that time the blood platelets forms a net like structure in the wounded region and clots the blood to prevent the blood from flowing.