Questions

When any part of the body is injured, the bleeding stops after a while. Why?

Write the main function of blood.

Describe the main parts of the human blood circulatory system.

Blood coagulates slower or does not coagulate in hemophilic person. Explain.

The blood group shall be tested before transfusion. Explain.

Arteries are deeply seated inside the muscles but veins are superficial. Why?

A person with anaemia feels tired after a short walk. Give reason.

Arteries do not have valves but veins have valves. Why?

The wall of the left ventricle is thicker than the wall of the right ventricle.

The wall of the ventricle is highly muscular or thicker than the wall of the auricle. Why?