Question

The heart in amphibians has

• A. two atria and two ventricles
• B. one atrium and two ventricles
• C. two atria and one ventricle
• D. one atria and one ventricle

Answer 1

The correct option is C two atria and one ventricle

Three chambered hearts are seen in all amphibians and most reptiles. There are two atria and one ventricle. There are separate blood vessels that carry oxygenated blood to the body and vessels that bring the deoxygenated blood to the right atrium. Blood from the right atrium is pumped to the lungs and cutaneous skin for gaseous exchange. The oxygenated blood from the cutaneous skin and lungs enters the left atrium and then the ventricle. The oxygenated blood is then pumped to the whole body.