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Bassett Collection of Stereoscopic Images of Human Anatomy

Dissection of left ear from superior aspect

Relation of ear to temporomandibular joint, anterosuperior view

Image #61-4

KEYWORDS: Bones cartilage joints, Ear.

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Dissection of left ear from superior aspect
Relation of ear to temporomandibular joint, anterosuperior view
The temporal bone has been cut away to expose the external auditory meatus (16), with its periosteal lining intact, and the articular cartilage which lines the mandibular fossa of the temporal bone (19).
  1. Subarcuate fossa (occupied by vein)
  2. Upper pointer: Superior semicircular canal Lower pointer: Utricle
  3. Vestibulocochlear nerve (cochlear part)
  4. Upper pointer: Facial nerve (VII) (within facial canal) Lower pointer: Geniculate ganglion
  5. Cochlea
  6. Left pointer: Tendon of tensor tympani muscle Right pointer: Capitulum of malleus
  7. Anterior malleolar fold (covering anterior process malleus)
  8. Greater superficial petrosal nerve
  9. Lessor superficial petrosal nerve
  10. Middle meningeal artery
  11. Cut bone of floor of skull (greater wing of sphenoid bone)
  12. Lateral semicircular canal
  13. Tympanic antrum
  14. Posterior ligament of incus
  15. Flaccid part of tympanic membrane
  16. External acoustic meatus (periosteal lining intact)
  17. Upper pointer: Scutum of temporal bone (squamous part) which fills notch (of Rivinus) between superior ends of tympanic annulus Lower pointer: Lateral margin of tympanic cavity
  18. Cut edge of calvaria
  19. Articular cartilage lining mandibular fossa