Question

During the pharyngeal phase of swallowing, what is the primary protective function of the epiglottis to prevent aspiration?

Accepted Answer

During the pharyngeal phase of swallowing—the involuntary movement of food from the back of the mouth into the esophagus—the epiglottis acts as a physical gatekeeper. The epiglottis is a leaf-shaped flap of cartilage located at the entrance of the larynx, which is the hollow tube that allows air to pass into your lungs. As you swallow, the larynx lifts upward and forward, causing the epiglottis to fold backward over the opening of the larynx, known as the glottis. This creates a tight seal that diverts food and liquid away from the airway and toward the esophagus, which is the digestive tube leading to the stomach. Think of this process like a drawbridge lifting to block traffic from a highway while allowing a boat to pass safely underneath. By physically covering the airway, the epiglottis prevents aspiration, which occurs when foreign material accidentally enters the lungs instead of the digestive system.

During the pharyngeal phase of swallowing, what is the primary protective function of the epiglottis to prevent aspiration?

During the pharyngeal phase of swallowing—the involuntary movement of food from the back of the mouth into the esophagus—the epiglottis acts as a physical gatekeeper. The epiglottis is a leaf-shaped flap of cartilage located at the entrance of the larynx, which is the hollow ....

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During the pharyngeal phase of swallowing, what is the primary protective function of the epiglottis to prevent aspiration?

During the pharyngeal phase of swallowing—the involuntary movement of food from the back of the mouth into the esophagus—the epiglottis acts as a physical gatekeeper. The epiglottis is a leaf-shaped flap of cartilage located at the entrance of the larynx, which is the hollow ....

Community Answers