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How does our heart work?

The heart is one of the most important organs in our body. It acts as a pump that pumps blood and supplies every part of the body with oxygen and nutrients. It is conical in shape and is about the same size as a human fist. It is located to the left of the sternum.

It has three layers - the first is the endocardium, which lines the inside of the heart, the second is the myocardium, which is located in the middle, and the epicardium, the outer layer. The heart consists of four chambers, or cavities, two on the right side of the heart and two on the left side of the heart.

The upper chambers are called the atria, and the lower ones are called the ventricles. The heart partition, or septum, separates the left and right sides of the heart. These parts play an important role in the proper functioning of the heart.

The main function of the heart is to pump oxygen-rich blood to every part of the body.

First, impure blood, or blood that is low in oxygen and high in carbon dioxide, enters the right atrium through the inferior vena cava (brings blood from the lower body) and the superior vena cava (brings blood from the upper body). It then passes through the tricuspid valve and enters the right ventricle.

The ventricle contracts and pushes the blood to the pulmonary valve, which carries the impure blood to the lungs, where oxygen re-enters the blood and carbon dioxide leaves.

The pulmonary vein then carries the oxygen-rich blood to the left side of the heart. The blood first enters the left atrium, then through the bicuspid valve, and then into the left ventricle. The ventricle then contracts and pushes the blood to the aorta through the aortic valve.

The aorta is a type of vessel that distributes blood to various organs and tissues.

Whenever the right or left ventricle is filled with blood, both the tricuspid and mitral (bicuspid) heart valves close to prevent blood from flowing back into the atrium as the ventricles contract. This process is repeated for as long as the person is alive.

Whenever the right or left ventricle is filled with blood, both the tricuspid and mitral (bicuspid) heart valves close to prevent blood from flowing back into the atrium as the ventricles contract. This process is repeated for as long as the person is alive.

Whenever the right or left ventricle is filled with blood, both the tricuspid and mitral (bicuspid) heart valves close to prevent blood from flowing back into the atrium as the ventricles contract. This process continues for as long as a person is alive. The surface of the atria and ventricles is lined with special muscle because they must contract and relax in a regular manner in order for blood to be pumped with each heartbeat.

The sinoatrial node is the heart’s natural “pacemaker,” or pacemaker, located in the right atrium of the heart that sends out electrical impulses at regular intervals. It sends these impulses at a rate of 60 to 80 impulses per minute when we are relaxed, and at a higher rate if we are exercising or physically straining. The rate of the impulses depends on the intensity of the work we are doing. These impulses cause the atrium to contract so that blood can flow into the ventricle. The impulse is then sent to the atrioventricular node, which is located in the lower part of the right atrium. There, the impulse is held, causing a short delay. This atrioventricular node sends the impulse to the ventricles, and blood is pumped out of the ventricles and into the body or lungs.

The whole process is repeated with each impulse. This electrical impulse from the heart causes the heart to beat. Almost 5 liters of blood are pumped every minute, and each impulse causes blood to circulate through the body and lungs.

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