what are the components of transport system in human being what are the function of these components?
Answers
There are three main components of the transport system in human beings – heart, circulating blood, and blood vessels.
A) Heart: The heart is responsible for pumping the oxygenated blood throughout the human body.
It receives deoxygenated blood back from various body parts. This impure blood is further transported to the lungs to undergo the process of oxygenation.
B) Blood vessels: The blood vessels are responsible for the transport of the blood throughout the human body.
There are two types of blood vessels
C) Veins: They are elastic and thin and can be found close to the surface of the skin
They carry deoxygenated blood from various parts of the body to the heart except for umbilical and pulmonary veins which carry oxygenated blood
D) Arteries: They are elastic and thin
They are further divided into small network of blood vessels called capillaries
They carry oxygenated blood from heart to various parts of the body except for pulmonary artery which carries deoxygenated blood to the lungs.
E) Blood: Blood is a fluid connective tissue participating in the process of transferring oxygen, carbon dioxide, nutrients, and nitrogenous wastes.
It is composed of plasma, white blood cells ,platelets and red blood cells.