How the human heart works

How the human heart works

The heart which is the center of circulatory system in the human body is a network of the blood of vessels that takes blood around the body. Blood goes with oxygen and some nutrient that the body system need to keep them healthy and working properly. The heart is made of muscle it works is to pump blood throughout the circulatory system.

How the heart works

The heart is divided into two segments, the right-side pumping system and left side pumping system’

“the right-side

“the left side

The heart is again having four chambers that pump blood, 2 on the right side and 2 on the left side.

How the blood flow through the heart

·         Right atrium accepts oxygen-poor blood from the rest of the body and pushes it to the right ventricle using the cupid valve

·         Right ventricle pumps/pushes oxygen-rich blood to the lungs using the pulmonary valve.

·         Left atrium receives/accepts oxygen-rich from the lungs and passes it to left ventricle via the mitral valve.

·         Left ventricle pumps/taps oxygen-poor via the aortic valve to the rest of the body.

Left and right-side atria are smaller chambers that taps blood into ventricles. Right and left side ventricles are stronger pumps because it taps blood the whole-body system, when the heart is healthy and functions normally like it is supposed to, it means the 4 chambers are working together in a coordinated and continuous effort to keep oxygen-rich going around the body system. The heart has its own electric system that harmonizes the work of the 4 chambers called heart rhythm and controls the frequency of heartbeats known as heart rate.

How the heart keeps it normal work?

Control the timing of the heartbeat: your heart electric system regulates the timing of the pump. When the electric system of the heart is working properly, it regulates the normal rhythm and rate. Issues with the electric system cause arrhythmia, which means that the heart chambers are working in an uncoordinated manner or randomly or when it beats too fast known as (tachycardia) or very slow(bradycardia).

keeping the muscles of the heart-healthy: the heart is made of special muscles called (myocardium). Which does the whole pumping job? It releases to get filled with blood and squeezes/contracts to tap out blood. The heart’s muscle health affects the ability and contractility to relax. Which shows if the heart is able to pump the required blood each time it beats.


Keeping the blood flow efficient: the heart having 4 valves which control the flow of blood out and in of the chambers. There is still valvesbetween ventricles and atrium on each sides of the heart, also there is a valve controlling blood flow out of the ventricles. Valves are designed in a way to keep blood flowing/moving forward only. When each chamber compresses/contracts, a valve open to let blood flow out. When it relaxes/releases, valve closes to hinder blood from dropping back into the chamber and let the chamber fill with blood. An issue with the heart valves can interrupt the normal flow and cause problem of the heart.


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