Sandwiched between the layer of circular and longitudinal muscle ...

[Kikoku]

Sandwiched between the layer of circular and longitudinal muscle in the muscularis externa is the
 A) mucosa.
  B) submucosa.
  C) muscularis mucosa.
  D) myenteric plexus.
  E) submucosal neural plexus.

Question 2

When the tympanic membrane vibrates with the same frequency as the incoming sound waves it is known as
 A) resonance.
  B) amplitude.
  C) pitch.
  D) hertz.
  E) cycles.

[cici]

Answer to Question 1

D

Answer to Question 2

A