Question

what are the components of the transport system in human beings? what are the functions of these components?

Answer 1

The main components of the transport system in human beings are the heart, blood, and blood vessels. Heart pumps oxygenated blood throughout the body. It receives deoxygenated blood from the various body parts and sends this impure blood to the lungs for oxygenation.

Answer 2

Answer:

In human beings the transport system consists of the following:

(i) Heart: It acts as a pumping organ.

(ii) Blood: It is the transport medium. It is made up of:

(a) Plasma–It carries food molecules, nitrogenous wastes, salts, carbon dioxide, hormones proteins etc. in a dissolved form.

(b) RBC–Consists of haemoglobin and transports oxygen.

(c) WBC–Helps to fight infection.

(d) Platelets–Helps in the clotting of blood.

(iii) Blood vessels:

(a) Arteries–Carry oxygenated blood away from the heart to each and every cell.

(b) Veins–Bring de-oxygenated blood to heart for purification.