| 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 |
