Question

Explain double circulation in amphibian and reptiles

Answer 1

First of all there is not complete double circulation in amphibia and reptile except crocrodile as they have 4 chamber heart rest other amphibia and reptiles have 3 chambered heart .....now as the question is circulation in amphibia and reptile it's from 2 auricle and 1 ventricle

Answer 2

Answer:

Amphibians have 3 chambered hearts except crocodile...Crocodiles are the only amphibian to have 4 chambered heart

Explanation

• Amphibians have a three-chambered heart that has two atria and one ventricle.

• The two atria receive blood from the two different circuits (the lungs and the systems). There is some mixing of the blood in the heart’s ventricle, which reduces the efficiency of oxygenation.
• The advantage to this arrangement is that high pressure in the vessels pushes blood to the lungs and body.
• The mixing is mitigated by a ridge within the ventricle that diverts oxygen-rich blood through the systemic circulatory system and deoxygenated blood to the pulmocutaneous circuit where gas exchange occurs in the lungs and through the skin.

For this reason, amphibians are often described as having double circulation.

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