Describe double circulation in human beings. Why is it necessary?

First we understand about a double circulation?

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 Deoxygenated blood: Little to no oxygen, and a lot of carbon dioxide and another is Oxygenated blood: Oxygen-rich

Two Types of Circulation: Double Circulation in Human

Plumonary Circulations:

Lungs are involved in this type of circulation.

In this pathway, when deoxygenated blood is transferred to the lungs via the pulmonary artery and that deoxygenated blood comes from the right atrium to the right ventricle and then pulmonary artery.

Now, carbon dioxide is removed and oxygen enters as a result of which blood carries oxygenated blood.

This oxygenated blood is carried by Pulmonary Vein to the Left Atrium. Further, this blood goes to the Left Ventricle.

Systemic Circulation:

All systemic organs and tissues are involved in this type of circulation.

Oxygenated blood will go to the tissues and organs via Aorta when then becomes deoxygenated as a result of by-products (Carbon di oxide) of metabolic and respiration processes.

This deoxygenated blood is carried by Vena Cava to the right atrium and then further into the right ventricle.

Double circulation is the circulation of blood through two separate circuits in the human body: the pulmonary circuit and the systemic circuit. The pulmonary circuit carries oxygen-poor blood from the heart to the lungs, where it picks up oxygen and releases carbon dioxide, and then returns oxygen-rich blood to the heart. The systemic circuit carries oxygen-rich blood from the heart to the body’s tissues, where it delivers oxygen and nutrients and removes waste products, and then returns oxygen-poor blood to the heart.

Double circulation is necessary in humans because it allows for the efficient transport of oxygen and nutrients to the body’s tissues while also ensuring that waste products are removed. The pulmonary circuit is responsible for oxygenating the blood and removing carbon dioxide, which is essential for the survival of all cells in the body. The systemic circuit then delivers the oxygenated blood to the body’s tissues, where it is used for energy production and other metabolic processes.

In addition, double circulation allows for the separation of oxygen-poor and oxygen-rich blood, which is important because the two types of blood have different functions and properties. Oxygen-poor blood contains more carbon dioxide and waste products, while oxygen-rich blood contains more nutrients and oxygen. By separating the two types of blood, the body can ensure that each type is delivered to the appropriate locations and used efficiently.

Overall, double circulation is a crucial process in the human body that ensures the efficient transport of oxygen and nutrients to the body’s tissues while also facilitating the removal of waste products. Without this process, the body would not be able to sustain life.