Question

What is double circulation?

Answer 1

Hint: The heart is the most important organ for blood circulation, and twofold circulation is a good way to circulate blood since it is efficient. The key distinction is that blood travels in two directions: one for oxygenated blood and another for deoxygenated blood. As a result, the term "double circulation" was coined. A twofold circulation system is used by the majority of mammals, including humans.

Complete answer:
There are four chambers in the human heart:
1. Atria on the left
2. Atria on the right
3. Ventricles on the left
4. Ventricles on the right
Furthermore, the pulmonary artery and vein connect the heart to the lungs. There are two channels through which blood flows in double circulation. They are as follows:
1. Circulation throughout the body-
The left ventricles send oxygenated blood to the tissue capillaries via systemic circulation.
The oxygen-rich blood is sent to the aorta, where it circulates throughout the body.
Later, the veins and venules collect the carbon dioxide-rich deoxygenated blood from various areas of the body.
The deoxygenated blood is returned to the right atrium via the superior vena cava.
The right atrium transports blood to the right ventricle for pulmonary circulation after receiving deoxygenated blood.
2. Circulation of the lungs-
Blood circulates from the right atrium to the left atrium in the pulmonary circulation. In this path, you'll find:
The right ventricle's blood is collected by the pulmonary artery and carried to the lungs for oxygenation.
Following the purification process, oxygenated blood is returned to the left atrium via the pulmonary vein, which then travels to the left ventricles.
The oxygenated blood is pumped to the aorta for systemic circulation via the left ventricles.
Both oxygenated and deoxygenated blood are kept separate by double circulation. As a result, this circulation guarantees that the body has a constant supply of oxygen while also increasing body efficiency. One of the reasons mammals can maintain their body temperatures is because of this. A third portal mechanism, in addition to the double circulation, exists to boost circulation efficiency.

Note:
In a single circulatory system, blood travels from the heart to the gills, where it is purified before being dispersed to various areas of the body. The moniker "single circulation" comes from the fact that just one heart cycle is completed. Birds, fish, reptiles, and other animals, for example, have one circulation.