A structure that helps prevent food from entering the pharynx ...

[strangeaffliction]

A structure that helps prevent food from entering the pharynx prematurely is the
 A) uvula.
  B) pharyngeal arch.
  C) palatoglossal arch.
  D) palatopharyngeal arch.
  E) epiglottis.

Question 2

The frequency of a perceived sound depends on
 A) the frequency of stereocilia vibration.
  B) the number of hair cells that are stimulated.
  C) which part of the cochlear duct is stimulated.
  D) the movement of perilymph in the cochlear duct.
  E) the frequency of vibration of the tectorial membrane.

[al]

Answer to Question 1

A

Answer to Question 2

C

[strangeaffliction]

Excellent

[xthemafja]

Gracias!