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Explain how a frog uses positive pressure to move air into and out of its lungs
To produce inspiration, the floor of the mouth is depressed, causing air to be drawn into the buccal cavity through the nostrils. The nostrils are then closed, and the floor of the mouth is elevated. This creates a positive pressure in the mouth cavity and drives air into the lungs through the open glottis.
Answer:A frog may also breathe much like a human, by taking air in through their nostrils and down into their lungs. ... To elimate the carbon dioxide in the lungs the floor of the mouth movesdown, drawing the air out of the lungsand into the mouth.
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