Name a cranial nerve that innervates this organ

What is the function of the structures indicated by arrows A, B and C?

What is the function of the structure labelled B?

Identify structure “A”.

Identify the structure labeled ”  A “

  Identify the structure indicated by arrow “C” 

Identify the bone marking at B.  

  Identify the structure labeled “A” 

Give the function for the region labeled “C” on the model.

Identify the histological structure labeled “D”