What is the primary function of the epiglottis?

The primary function of the epiglottis is to prevent aspiration. The epiglottis is a flap of tissue located at the base of the tongue that acts as a valve during swallowing. When you swallow, the epiglottis closes off the trachea (windpipe), ensuring that food and liquid do not enter the airway. This mechanism is crucial for protecting the lungs from aspiration, which can lead to serious complications like choking or aspiration pneumonia. By directing food into the esophagus and keeping the airway clear, the epiglottis plays a vital role in safe swallowing and respiratory protection. Understanding this function emphasizes the importance of the epiglottis in both the digestive and respiratory systems.