alleryThe frog heart has how many chambers?
ATwo chambers (one atrium, one ventricle)
BFour chambers (2 atria + 2 ventricles)
CThree chambers (2 atria + 1 ventricle)
DFive chambers (4 standard + the bulbus)
Answer & Solution
Correct answer: C. Three chambers (2 atria + 1 ventricle)
Frog (and most amphibians) have a 3-CHAMBERED heart: 2 atria + 1 ventricle.
Mixing of oxygenated + deoxygenated blood occurs in the ventricle (less efficient).
Fish = 2; birds + mammals = 4.
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