During swallowing, the air passages are blocked by a flap of tissue called the pharynx.

Name: During swallowing, the air passages are blocked by a flap of tissue called the pharynx.
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During swallowing, a flap of tissue called the epiglottis blocks off the air passages to prevent food or liquid from entering the lungs. The pharynx is a muscular tube that connects the mouth and nasal cavity to the esophagus and larynx.

During Swallowing, the Air Passages Are Blocked by a Flap