Human Digestive System · NCERT Biology

Which structure prevents the entry of food into the glottis during swallowing?

  1. Sphincter of Oddi
  2. Gastro-oesophageal sphincter
  3. Epiglottis (cartilaginous flap)
  4. Pyloric sphincter
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Correct answer: Epiglottis (cartilaginous flap)

The epiglottis is a cartilaginous flap that covers the glottis (opening of the windpipe) during deglutition. This reflex action ensures food enters the esophagus rather than the larynx.

Difficulty: Medium Question 4 of 20

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