During swallowing, nasopharynx is closed off by ________.
-
soft and hard palate
-
uvula alone
-
hard palate and uvula
-
uvula and soft palate
D
Correct answer
Explanation
During swallowing, the soft palate (velum) elevates and the uvula swings backward to close off the nasopharynx. This prevents food/liquid from refluxing into the nasal cavity. The hard palate is anterior bone and doesn't move. Uvula alone cannot seal the opening.