The cells generally known "the army of human body" are

The heart is also called

A. muscular pump

B. pumping device

C. pumping machine

D. pumping muscle

The walls of left ventricle are thicker than the walls of right ventricle because

A. it has to pump blood to the whole body

B. it has to pump the blood to lungs

C. blood reaches this ventricle in huge amount

D. blood reaches this ventricle with extra pressure

The vessel which takes the blood from heart to lungs, is known as

A. renal artery

B. pulmonary artery

C. renal vein

D. pulmonary vein

Tiny vessels link up and form a

A. artery

B. vein

C. capillary

D. nerve

The clot of blood formed in the blood vessel is known as

A. hemophilia

B. anemia

C. thrombosis

D. varicose vein