An organ consisting of the right atrium
, right ventricle
, left atrium, and left ventricle. Non-oxygenated blood
enters the heart through the precava
(large veins from the rest of the body) and oxygenated blood leaves through the aorta
. Pulmonary arteries
carry the blood over the lungs
in order for it to become oxygenated and recycle
d through the body.
If you have ever held a heart in your hand (the closest I have ever come is a cat's heart during Biology class), you will know that it is a beautiful, perfect, powerful thing.