Question

The common name of erythrocytes is ________.
1. White Blood Cells
2. Red Blood Cells
3. Plasma
4. Platelets

Answer 1

Correct Answer - Option 2 : Red Blood Cells

The correct answer is Red Blood Cells.

• The common name of erythrocytes is Red Blood Cells.

• Red Blood Corpuscles (RBC):
  • Red Blood Corpuscles (RBC) in a mammal is biconcave.
  • There is no nucleus in it. (Exception– Camel and Lama. RBC is formed in Bone marrow.)
  • Its life span is from 20 days to 120 days.
  • Its destruction takes place in the liver and spleen.
    • Therefore, the liver is the grave of RBC.
  • It contains haemoglobin, in which haeme iron-containing compound found and due to this the colour of blood is red.
  • The main function of RBC is to carry oxygen to all cells of the body bring back the carbon dioxide.

• White Blood Cells (WBC) is also called Leucocytes.
  • Its formation takes place in Bone marrow, lymph node and sometimes in the liver and spleen.
  • Its main function is to protect the body from the disease.
  • The ratio of RBC and WBC is 600: 1.
• Blood Platelets is also called Thrombocytes.
  • It is found only in the blood of human and other mammals.
• Plasma: This is the liquid part of blood. 60% of the blood is plasma.
  • Its 90%the  part is water, 7% protein, 0.9% salt and 0.1% is glucose.
    • The Function of plasma: Transportation of digested food, hormones, excretory product, etc. from the body takes place through plasma