Question

explain the process of blood circulation with the help of a well labelled diagram​

Answer 1

Double circulation:: The blood flows twice through the heart and it is called double circulation.

1) The blood from all body parts is brought to right auricle which pumps it into right ventricle.Fron right ventricle blood is pumped to lungs (through pulmonary artery)for oxygenation.

2)The oxygenated blood from lungs is brought to left auricle which pumps it into left ventricle .From the left ventricle oxygenated blood is distributed to all parts of the body through largest artery called aorta.[This is second circulation].

IMPORTANCE OF DOUBLE CIRCULATION:

Double circulation not only allows a highly efficient supply of oxygen to body but it also helps in meeting the high energy needs .This high energy is mainly required to maintain the constant body temperature.

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Answer 2

Hi

Here is your answer! ! ☺

Its detailed answer:

The blood circulatory system (cardiovascular system) delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through the entire body. The arteries carry blood away from the heart; the veins carry it back to the heart. The system of blood vessels resembles a tree: The “trunk” – the main artery (aorta) – branches into large arteries, which lead to smaller and smaller vessels. The smallest arteries end in a network of tiny vessels known as the capillary network.

There isn't only one blood circulatory system in the human body, but two, which are connected: The systemic circulation provides organs, tissues and cells with blood so that they get oxygen and other vital substances. The pulmonary circulation is where the fresh oxygen we breathe in enters the blood. At the same time, carbon dioxide is released from the blood

Blood circulation starts when the heart relaxes between two heartbeats: The blood flows from both atria (the upper two chambers of the heart) into the ventricles (the lower two chambers), which then expand. The following phase is called the ejection period, which is when both ventricles pump the blood into the large arteries.

In the systemic circulation, the left ventricle pumps oxygen-rich blood into the main artery (aorta). The blood travels from the main artery to larger and smaller arteries and into the capillary network. There the blood drops off oxygen, nutrients and other important substances and picks up carbon dioxide and waste products. The blood, which is now low in oxygen, is collected in veins and travels to the right atrium and into the right ventricle.

This is where pulmonary circulation begins: The right ventricle pumps low-oxygen blood into the pulmonary artery, which branches off into smaller and smaller arteries and capillaries. The capillaries form a fine network around the pulmonary vesicles (grape-like air sacs at the end of the airways). This is where carbon dioxide is released from the blood into the air inside the pulmonary vesicles, and fresh oxygen enters the bloodstream. When we breathe out, carbon dioxide leaves our body. Oxygen-rich blood travels through the pulmonary veins and the left atrium into the left ventricle. The next heartbeat starts a new cycle of systemic circulation.

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