During the cardiac cycle the tricuspid and bicuspid valves get closed when:
1. when pressure inside the ventricles is at its lowest
2. when pressure inside the atria is greater than that inside the ventricles
3. when ventricular pressure exceeds that of the atria
4. when pressure is greater in the aorta than in the left ventricle

A large bone marrow cell with a lobated nucleus responsible for the production of blood thrombocytes is:
1. progranulocyte
2. basophilic band cell
3. monoblast
4. megakaryoblast

The least significant factor for erythropoiesis amongst the following is:
1. vitamin B₁₂
2. vitamin B₆
3. folic acid
4. gastric intrinsic factor

A disease state in which the hematocrit (the volume percentage of red blood cells in the blood) is elevated is called as:
1. polycythemia
2. anemia
3. leukemia
4. porphyria

The deficiency of cynocobalamin or vitamin B12 causes:

Which cells are the rarest leukocytes?
1. monocytes
2. basophils
3. eosinophils
4. lymphocytes

All the following leukocytes have phagocytic properties except:
1. monocyte
2. lymphocyte
3. neutrophil
4. eosinophil

Which of the following will be regarded as a normal thrombocyte count?
1. 1 million per cubic cc
2. 200,000 per cubic mm
3. 1 million per cubic mm
4. 10,000 per cubic mm

What is the percentage of proteins in plasma?

The colloid osmotic pressure in the human blood is largely due to: