Epiglottis

Definition

The epiglottis is a flap of cartilage located at the base of the tongue that covers the trachea during swallowing. It prevents food and liquid from entering the airway, directing them instead into the esophagus.

5 Must Know Facts For Your Next Test

1. The epiglottis is essential for preventing aspiration of food and liquids into the lungs.
2. It functions reflexively during swallowing to close off the trachea.
3. Inflammation or infection of the epiglottis, known as epiglottitis, can be life-threatening and requires immediate medical attention.
4. The position of the epiglottis changes with age; in infants, it is higher in the throat, which helps them breathe while nursing.
5. During a physical assessment, observing difficulty in swallowing or abnormal sounds may indicate issues with the epiglottis.

Review Questions

• What role does the epiglottis play in preventing aspiration during swallowing?
• How does inflammation of the epiglottis impact breathing and swallowing?
• Why is it important to assess for signs of difficulty in swallowing when evaluating digestive health?

Related terms

Trachea: The windpipe that connects the larynx to the bronchi and allows air passage to and from the lungs.

Esophagus: The muscular tube that connects the throat (pharynx) with the stomach, facilitating food transport.

Epiglottitis: A potentially life-threatening condition where inflammation swells and blocks airflow to your lungs.