1) Air filled chamber in temporal bone.
2) Contains 3 auditory ossicles (small bones) that transmit sound from the tympanic membrane to the inner ear
  A) Malleus (Hammer)
  B) Incus (Anvil)
  C) Stapes (Stirrup)
3) The tympanic membrane
  A) Translucent and permits visualization of the middle ear
  B) Separates the external ear from the middle ear
4) Eustachian Tubue
  A) Bony Ecatilaginous passage way between nasopharynx and middle ear
  B) Equalizes pressure
The Surface anatomy of the middle ear.