The heart lies in the middle of the two lungs of the breast. The heart begins to be in the middle of the chest up to 5 cm to the left. The heart is a hollow organ of four bodies, covered by muscle. The size of a man’s palm is about the same size and weighs less than 5 pounds. It looks a bit like pear fruit. Tall and thin.The human heart may be somewhat taller, just as the fat and the bait may be slightly larger than the human heart.Myocardium is called the heart that is made up of strong muscles. It is the myocardium that helps the blood to reach the blood vessels through the contraction of the heart. The heart has two blood pumping units. Right blood goes to the lungs and left blood goes to every part of the body including the head.The four cells in the heart are right atrium and right ventricle, and left atrium and left ventricle. Blood goes from the right atrium to the right ventricle, and there is a door between these two cells called a tricuspid valve. The door at the beginning of the right ventricle pulmonary artery is called pulmonary ventricle.
The blood from the right ventricle enters the bloodstream pulmonary artery (blood vessel) and later spreads to the small intestine of the lungs. Taking large amounts of oxygen from the lungs, the blood goes back to the left atrium through the pulmonary vein. Blood from the left atrium goes to the left ventricle, the door between these two cells is called the mitral valve.
The aortic valve is called the left ventricle and the anterior door.
The heart has two blood pumping units.