Question

what are the three components or parts of circulatory system of man .write the difference between arteries and vein ?

Answer 1

is it blood,heart and lungs

Answer 2

The circulatory system consists of four major components:

The Heart: About the size of two adult hands held together, the heart rests near the center of the chest. Thanks to consistent pumping, the heart keeps the circulatory system working at all times.

Arteries: Arteries carry oxygen-rich blood away from the heart and where it needs to go.

Veins: Veins carry deoxygenated blood to the lungs where they receive oxygen.

Blood: Blood is the transport media of nearly everything within the body. It transports hormones, nutrients, oxygen, antibodies, and other important things needed to keep the body healthy.