I am very confused............
Asked by sonali221994 | 20th Dec, 2009, 03:58: PM
Epiglottis is a leaf-shaped piece of elastic cartilage.
During swallowing, the pharynx and larynx rise. Elevation of the pharynx widens it to receive food and drink; elevation of the larynx causes the epiglottis to move down and form a lid over the glottis, closing it off. The larynx leads to the trachea, so closing off the glottis closes the trachea also.
Answered by | 22nd Dec, 2009, 08:16: AM
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