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Principles of Animal Physiology

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<strong>Principles</strong> <strong>of</strong> <strong>Animal</strong> <strong>Physiology</strong><br />

Respiratory System<br />

Air Respirers<br />

▪ Bimodal breather - Frogs g - Fig g 11-11<br />

▸ Open nostrils<br />

▸ Lower floor <strong>of</strong> buccal cavity<br />

▸ Air rushes into buccal cavity<br />

▸ Close nostrils<br />

▸ Elevate floor <strong>of</strong> buccal cavity<br />

▸ Open glottis<br />

▸ Pump air into lungs<br />

▸ Close glottis<br />

▸ Repeat to inflate lungs<br />

K l tti d th t h l

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