Which of the following anatomical structures prevents food from entering the respiratory system?

Question

Quizplus · Accepted Answer

The epiglottis is a cartilage flap located at the top of the larynx that is responsible for closing during swallowing. This flap covers the opening to the trachea so that food does not enter the lower respiratory airways.
The pharynx is a shared cavity behind the nose and moth that leads to the esophagus and trachea.
The pleura are a double layered membrane that line the lungs.
The larynx is located just inferior to the pharynx and is commonly referred to as the "voice box".
You may use the diagram below as a visual reference for structures described in this question.
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Which of the Following Anatomical Structures Prevents Food from Entering