4. Cardiovascular system (Circulatory system)
4. Cardiovascular system
The cardiovascular system is one that circulates the blood in the body.
It comprises blood, blood vessels (arteries, veins & capillaries), and a heart.
The main functions of this system are to
- maintain a uniform temperature,
- Supply oxygen and nutrition to cells and tissues
- To collect waste matter
- To carry hormones for action on target organs.
- To facilitate body defense.