What is heart ............
Answers
The human heart is an organ that pumps blood throughout the body via the circulatory system, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other wastes.
The heart is a pump, usually beating about 60 to 100 times per minute. With each heartbeat, the heart sends blood throughout our bodies, carrying oxygen to every cell. After delivering the oxygen, the blood returns to the heart. The heart then sends the blood to the lungs to pick up more oxygen
Explanation:
The four major functions of the cardiovascular system are:
1.To transport nutrients, gases and waste products around the body.
2.To protect the body from infection and blood loss.
3.To help the body maintain a constant body temperature ('thermoregulation')
4.To help maintain fluid balance within the body.
It's the muscle at the centre of your circulation system, pumping blood around your body as your heart beats. This blood sends oxygen and nutrients to all parts of your body, and carries away unwanted carbon dioxide and waste products