http://en.wikipedia.org/wiki/Anatomy
Amphibians breathe by means of buccal pumping, a pump action in which air is first drawn into the buccopharyngeal region through the nostrils. These are then closed and the air is forced into the lungs by contraction of the throat.They supplement this with gas exchange through the skin which needs to be kept moist.
Amphibians breathe by means of buccal pumping, a pump action in which air is first drawn into the buccopharyngeal region through the nostrils. These are then closed and the air is forced into the lungs by contraction of the throat.They supplement this with gas exchange through the skin which needs to be kept moist.
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