in easy words please
why amphibians and reptiles have three chambered heart why.
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they have 3 chambered heart- 2 auricles and 1 ventricle. in such hearts mixing up of oxygenated and deoxygenated blood takes place.
the carbon-dioxide rich blood enters the right auricle and is sent for oxygenation from where the oxygenated blood enters the left auricle . however, in the ventricle both the bloods mix and this mixed blood is transported to the body parts in amphibians & reptiles. this process is called incomplete double circulation.
thus they have 3-chambered heart.
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