[Campbell Biology P.991] In the mammalian respiratory system, what is the primary function o... | Practice Question

In the mammalian respiratory system, what is the primary function of the epiglottis during swallowing?

  • A: To produce sounds by vibrating as air passes through.
  • B: To filter, warm, and humidify incoming air before it reaches the lungs.
  • C: To prevent food from entering the trachea (windpipe) by covering the glottis.
  • D: To provide structural support and keep the trachea open at all times.

Explanation

The text states: 'When food is swallowed, the larynx the upper part of the respiratory tract moves upward and tips the epiglottis over the glottis, which is the opening of the trachea, or windpipe. This allows food to go down the esophagus to the stomach.' This clearly describes the epiglottis's role in preventing food from entering the trachea during swallowing.