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Question
Oxygenated blood never goes to heart in:
Oxygenated blood never goes to heart in:
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Solution
The correct option is A Pisces
Mammals and birds have a four-chambered heart and there is the proper distinction between the oxygenated and deoxygenated blood. Amphibians have three chambers - two auricles and one ventricle and there is also oxygenated blood that goes to heart for circulation. But fishes have a two-chambered heart, that has only a single atrium and a single ventricle. The atrium collects blood that has returned from the body, while the ventricle pumps the blood to the gills, where gas exchange occurs and thus mixing of oxygenated and deoxygenated blood takes place. Due to the mixing of blood, fully oxygenated never goes to the heart.
Mammals and birds have a four-chambered heart and there is the proper distinction between the oxygenated and deoxygenated blood. Amphibians have three chambers - two auricles and one ventricle and there is also oxygenated blood that goes to heart for circulation. But fishes have a two-chambered heart, that has only a single atrium and a single ventricle. The atrium collects blood that has returned from the body, while the ventricle pumps the blood to the gills, where gas exchange occurs and thus mixing of oxygenated and deoxygenated blood takes place. Due to the mixing of blood, fully oxygenated never goes to the heart.
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