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The majority of mammals including humans have a double circulatory system, i.e.

The majority of mammals including humans have a double circulatory system, i.e. we have two loops in our body where the blood circulates. Double circulation is the movement of blood in the whole body and it involves the flow of

It is important for human bodies as it ensures our tissues and muscles receive blood full of oxygen instead of the impure mixture of oxygenated and deoxygenated blood. The organ powering double circulatory system is the heart that pumps blood through four chambers that include two Atria and two Ventricles. The four valves present in the heart keep blood moving in one direction and help in preventing the backflow of blood into the heart. The two valves are found in the heart itself and the other two valves are found in the major arteries in the heart. The major arteries of the heart are Aorta and Pulmonary Artery. All of these parts can be understood if we see the diagram of the heart with all labelings. As we can see above in the picture, humans have four chambers in their hearts (whereas some organisms have two or three-chambered hearts such as in reptiles and fish). The human heart can be separated into two halves, separated by a muscle tissue called septum; each half having an atrium that sits on the top of one ventricle. It is referred to as a double circulatory system because here, the blood passes through the heart twice per circuit. The left pump sends the fresh oxygenated blood around the body and on the other hand, the right pump sends deoxygenated blood to the lungs where it becomes oxygenated and flows back to the heart. It is important for the separation of oxygenated and deoxygenated blood in human beings as it makes the circulatory system more efficient and also helps in maintaining the constant temperature of the body. Below are the four chambers of the heart playing an important role in the double circulation in human beings.

And the cycle follows, the deoxygenated blood from the right ventricle goes to the lungs via the pulmonary artery. The CO 2 is exhaled out from the lungs at that spot. If anyone asks to define double circulation, you can easily talk about pulmonary and systemic circulation and describe how blood enters twice to the heart and escapes twice out of the heart in the whole process. Therefore, it is known as double circulation.

Talking about the significance of double circulation, one can understand from the following points how an efficient circulation is important for our bodies.

Circulation in the human heart is referred to as double circulation because having four-chambered hearts, the blood enters twice to the heart and blood escapes twice from the heart via arteries and veins. Therefore there is the double-entry and double exit of blood in the whole circulation and hence the name- double circulation.

Double circulation in human beings allows the separation of oxygenated and deoxygenated blood in the body. It helps in maintaining a high blood pressure required for essential processes. It enables pure blood to reach the different tissues and organs of the body like kidney, liver, etc.

Double circulation takes place with the help of two types of circulation in the human body that includes

Double circulation involves blood flow to the four chambers including the left atrium, left ventricle, right atrium, and right ventricle. Blood vessels like a pulmonary artery, aorta, vena cava and pulmonary vein are equally responsible to successfully complete the blood circulation.

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