Question

explain double circulation in human being with the help of flow chart

Answer 1

Answer:

Double circulation is the most efficient way of circulation. Here, in humans, the four-chambered heart, arteries, veins, and capillaries all have a vital role to play. Blood gets pumped out of the heart. This blood goes to different organs and then blood again comes back to the heart. All this happens in a very systematic way through the different arteries and veins carrying oxygenated and deoxygenated blood.

In double circulation, there are two pathways in which blood flows. They are:

1) Pulmonary pathway 2) Systemic pathway.

The pulmonary circulation or pathway carries the deoxygenated blood from the right side of the heart to the lungs. Exchange of oxygen and carbon dioxide takes place in the lungs and the blood is now oxygenated (with oxygen). Through the systemic circulation, oxygenated blood travels from the left side of the heart to the other areas of the body. At various organ sites, exchange of gases, nutrients, and waste through lymph occurs. This deoxygenated blood again goes back to the right side of the heart. The pulmonary circuit and the systemic circuit work together. This ensures that deoxygenated blood goes to the lungs through the pulmonary artery while the oxygenated blood from the aorta reaches the different organs and tissues.

Answer 2

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DOUBLE CIRCULATION


- There are four chambers in the heart totally. when all the chambers are in a relaxed(joint diastole) the pulmonary vein brings in the oxygenated blood to the left atrium.Tje tricuspid and the bicuspid valves open to push the blood to the ventricle.

- Now the left atrium is filled oxygenated blood.When the left atrium contracts the Oxygenated blood is pushed to the left ventricle of the heart.At this point the ventricle will be in relaxed stage known as "ventricle diastole".The SA node creates impulses which is received by AV.

-when the ventricle contracts( ventricle systole) the blood moves to main artery known as the aorta.This blood is distributed to all body organs .

-The blood loses oxygen when it produces for all the organs ie, it has been deoygenated.the deoxygenated blood enters through the main vein termed as Vena Cava.It brings in deoxygenated blood to right atrium.when right atrium contracts the blood is pushed to the right ventricle.

-And when the right ventricle contracts the blood is pushed to the lungs through pulmonary artery.

- A circulatory system where the blood enters the heart twice in one complete cycle is called "double circulation".ex:- human beings.

OR

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.

2) From the left ventricle oxygenated blood is distributed to all parts of the body through largest artery called aorta.

See the flow chart below :