Question

list four function of the human heart . why is doubke circulation necessary in the human body

Answer 1

Answer:

The main function of the heart is to circulate blood throughout the body. It is a chambered organ which is capable to separating oxygenated and deoxygenated blood into different chambers in order to bring "used" blood from the body and send it to lungs to be oxygenated.

Explanation:

Double circulation helps to keep oxygenated and deoxygenated blood from mixing. Such separation allows a highly efficient supply of oxygen to the body.

Answer 2

During a single cycle blood goes twice in the heart which is know as doubky cricuation. It is necessary in human being to separate oxygenated and de-oxygenated blood because this make the cricualetory system is more effected and help in maintaining constant body temperature.