Circulatory system-1

Q1. The plasma from which the protine fibrinogen has bee removed is called -----------------

• a. Blood
• b. Lymph
• c. Serum
• d. Plasma

Q2. An adult human male has about ------- millions RBCs per cubic mm of blood.

• a.4
• b. 4.5
• c. 5
• d. 5.5

Q3. Leukopenia is the abnormal decrease in the number of---------------.

• a. WBCs
• b. RBCs
• c. Platelets
• d. Born marrow

Q4. Leukopenia are usually in the range of ------------- per mm3 of blood.

• a. 4000-5000
• b. 4000- 6000
• c. 4000-7000
• d. 4000-8000

Q5. At the site of injury, The platelets disintegrate to released the chemical called as ------------ which starts the process of blood clotting.

• a. Thrombokinase
• b. Thrombin
• c. Fibrinogen
• d. Fibrin