Question

Define the following: Circulatory system

Answer 1

Circulatory system:

1. The circulatory system is a system that involves the transportation of substances through the body with the help of blood.
2. In the human body, the amount of blood present is 5.5 L.
3. The major parts of the circulatory system are - the heart, blood vessels, and blood.
4. The blood of the body goes through blood vessels which are closed tube-like structures - arteries, veins, and capillaries.

The various function of the circulatory system are:

1. It helps in the transportation of food and oxygen to each and every cell.
2. Helps in removing waste materials released by different organs and transports to the organ which expels out these wastes such as kidneys, lungs, and intestine.
3. It provides protection against disease-causing microorganisms by destroying them.
4. Platelets in the blood promote clotting after an injury, this avoids excessive blood loss by the body.