Why does the heart require its own special ciculation system?

Answer 1

The heart is a muscle and muscle require oxygenated blood, it is not a special circulatory system it is a extension of the main system. While you might think the heart would have no problem getting enough oxygen-rich blood, the heart is no different from any other organ. It must have its own source of oxygenated blood. The heart is supplied by its own set of blood vessels. These are the coronary arteries. There are two main ones with two major branches each. They arise from the aorta right after it leaves the heart. The coronary arteries eventually branch into capillary beds that course throughout the heart walls and supply the heart muscle with oxygenated blood. The coronary veins return blood from the heart muscle, but instead of emptying into another larger vein, they empty directly into the right atrium.

Answer 2

The heart needs its own blood vessels because the blood moving through it is moving too fast to absorb nutrients, without the vessels the heart would not have sufficient oxygen to contract and therefore beat properly

Answer 3

The muscles required to circulate the blood necessitates a thick wall muscle group. The supply of oxygenated RBCs must be constant and immediate, so a closed system has evolved.

Answer 4

To pump blood to the rest of the body to receive oxygen so we don't you know, die or anything.

Answer 5

Because it is a muscle and requires circulation/oxygen/blood supply for the muscle to function. (i.e. pump)

Answer 6

All muscles in the body, whatever their function, need oxygen and nutrients, and these are delivered through the blood.

Answer 7

so it can get its own oxygen