Question

justify the statement that blood circulation in fish is different from the blood circulation in human being?​

Answer 1

Explanation:

In fish, the heart only has one atrium and one ventricle. The oxygen-depleted blood that returns from the body enters the atrium, and then the ventricle, and is then pumped out to the gills where the blood is oxygenated, and then it continues through the rest of the body.

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Answer 2

The blood circulation in fish is different from the blood circulation in human beings, because-

• There is a twofold circulation in humans. The right side of the heart gets blood that has returned from the body and is depleted in oxygen. This "deoxygenated" blood passes via the right atrium and right ventricle before being pumped to the lungs, where it is oxygenated. The oxygenated blood from the lungs enters the left ventricle via the left atrium and is then pushed out into the greater body circulation.
• A fish's heart is composed of only one atrium and one ventricle. The oxygen-depleted blood that returns from the body enters the atrium, then the ventricle, before being pumped out to the gills, where it is oxygenated before continuing through the body.