15. Why doesn't the food
enter the trachea instead of
going to the esophagus?

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
When food is the swallow
reflex activated and the
elevates and closes avoid portions of
food bolus entering trachea
causing aspiration strange material to
bronchi.