Question

What do you mean by double circulation reaction?
GIVE DEFINITION PROPERLY FOR 2 TO 3 MARKS ANSWER​
BRAINLIST ONE ANSWER.......

Answer 1

Answer:

The Majority of the mammals utilize a double circulatory reaction.

This means that we have two loops in our body.

One is oxydenated blood and deoxygenated blood.

• oxygenated blood means the oxygen rich blood and deoygenated blood is the blood which don't have oxygen.
• The circulatory system of man is called Double circulation as the blood passes the heart twice in one complete cycle of the body.It involves two circulation.
• pulmonary circulation:
• It begins from right ventricle which expels the blood into the pulmonary track.The blood flowing into the lungs becomes oxygenated n returns to the heart (left atrium)through pulmonary veins.
• systemic circulation:
• The circulation starts from left ventricle which sends the blood into the aorta.The aorta divides into arteries,arteriols and finally to capillaries and there by supplies oxygenated blood to various parts of the body.From there deoxygenated blood is connected n finqly "venacava" pour blood back blood into the right aricle of heart.
• neccesity of double circulation:The right and left side of the heart are useful to keep deoxygenated and oxygenated blood from mixing.This type of separation of oxygenated and deoxygenated blood ensures their highly efficient supply of oxygen to the body .This is useful in case of humans because it constantly gives energy to maintain their body temperature.

Answer 2

Answer:

The blood passes through heart twice in order to complete the whole circuit of the body is called double circulation