Question

nobdA bnsolosior ST Pharynx 1. Push down on the tongue until you open the jaws far enough to see a slightly pointed flap of tissue pointing dorsally (toward the back) (Fig. 12.2). This flap is the epiglottis, which covers the glottis. The glottis leads to the trachea (Fig. 12.3a). 2. Posterior and dorsal to the glottis, find the opening into the esophagus, a tube that takes food to the stomach. Note the proximity of the glottis and the opening to the esophagus. Each time the pig- or a human-swallows, the epiglottis instantly closes to keep food and fluids from going into the lungs via the trachea. 3. Insert a blunt probe into the glottis, and note that it enters the trachea. Remove the probe, insert it into the esophagus, and note the position of the esophagus beneath (dorsal to) the trachea. 4. Make a midline cut in the soft palate from the epiglottis to the hard palate. Then make two lateral cuts at the edge of the hard palate. 5. Posterior to the soft palate, locate the openings to the nasal passages. 6. Explain why it is correct to say that the air and food passages cross in the pharynx.. qib doe oed adh o

Answer 1

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