Describe how the heart beats?

Answer 1

Blood flows into the right atrium from the vena cava. It then is pumped to the right ventricle, which pumps the blood to the lungs via the pulmonary arterial system. In the lungs, the blood dumps CO2 and picks up O2 from capillaries running next to the alveoli of the lungs. Then, the returning blood enters the left atrium from the pulmonary veins, where it is pumped to the left ventricle. From there, the blood leaves the heart through the aorta to be distributed throughout the body.
Blood enters the heart through the superior and inferior venae cavae into the right atrium. This blood then flows through the right atrioventricular valve to the right ventricle. The right ventricle contraction opens the pulmonary valve and blood flows into the pulmonary trunk. The pulmonary arteries allow oxygen to be put into the blood, and carbon dioxide to be taken out. The blood then flows from the lungs through the pulmonary veins to the left atrium. It then flows through the left atrioventricular valve into the left ventricle. The contraction of the left ventricle opens the aortic valve. The blood then flows into the aortic valve to the ascending aorta and goes through the body to deliver oxygen to organs. The carbon dioxide-rich blood returns to the heart by means of the venae cavae. Contraction of the heart happens on both sides at the same time.

Answer 2

The heart is a very complex organ. To explain how the heart "beats" one must know that the ventricles of the heart and the atria are what work together to pump the blood through the heart. The heart has a power source so to speak generally referred to as the electrical source. The electrical system is what gets the heart to power it up and make it all possible.

Answer 3

Something like a small part of a body cell.

Answer 4

The pericardium is a bag surrounding the heart which acts as a shock absorber.

Answer 5

Posterior to the sternum, anterior to the thoracic vertebrae, and superior to the diaphragm.

Answer 6

A pig's heart is similar to that of a human. It has four chambers which pump blood throughout the body.