A combination of things causes the heart to pump and several conditions can interfere with the heart pumping. However, the left ventricle is the workhorse of the heart. It is said, in figuring comparisons, the heart can shove a steamship up on the beach it is so strong.
We have 3 electrical nodes (to simplify explanation) in the heart, one at the top, one at the bottom, one in the middle. Electrical impulses travel from one to the other causing the heart impulses. It is said heart muscle will beat on its own even in a lab setting it is so "electrical". As the heart depolarizes from these nodes it "beats".
We all have a natural "pacemaker", located in the right atrial wall of the heart. This "pacemaker" sets the heart's "sinus rhythm" of 70-80 bpm. Heart muscle is different from any other in the body.
heart
the heart pumps around your blood
The left ventricle of the heart pumps blood into the aorta. From there, it travels to all body tissues.
The right ventricle.
Right ventricle
blood plessure
The HEART pumps blood to all parts of the body.
Your heart pumps blood. It's part of the circulatory system.
One part takes in blood, the other pumps it back out. One part takes in blood, the other pumps it back out.
The heart pumps blood through the rest of the body.
Your heart is constantly is constricting and expanding which is what makes your blood flow. One part of the heart pumps in blood while the other part pumps out blood making a thud dud kind of noise.
Your heart