What is the function of the glands located within the structure at Arrow C?

Identify the BAND at “C”.

Identify “B”.

Identify the muscle indicated by “C”.

What area of the brain stem is labelled D?

Identify the structure labeled  ” B   “

  Identify the structure labeled ” C” 

Identify the muscle at “B”. 

Identify the structure labeled ” B “

Identify the area labeled “C”