| 1
.
| Tensor tympani muscle (within semicircular canal) |
| 2
.
| Major superficial petrosal nerve |
| 3
.
| Carotid wall (dark color due to blue latex within veins in carotid canal) |
| 4
.
| Semilunar ganglion |
| 5
.
| Minor portion trigeminal nerve (V) (cut off) |
| 6
.
| Bony part auditory tube (isthmus) |
| 7
.
| Upper pointer: Foramen ovale (opened) Lower pointer: Otic ganglion |
| 8
.
| Lateral plate (cartilaginous) auditory tube |
| 9
.
| Mucosa of auditory tube (cut open) |
| 10
.
| Cartilaginous part auditory tube (opened) |
| 11
.
| Tendon of origin of Tensor veli palatini muscle |
| 12
.
| Levator veli palatini muscle |
| 13
.
| Tegmen tympani |
| 14
.
| Tympanic antrum |
| 15
.
| Promontory semicircular canal |
| 16
.
| Upper pointer: Prominence of facial canal Lower pointer: Cochlearform process (with tendon of tensor tympani muscle cut across) |
| 17
.
| Upper pointer: Fenestrated vestibular fossa Lower pointer: Capitulum of stapes |
| 18
.
| Upper pointer: Tendon of stapedius muscle emerging from pyramidal eminence Lower pointer: Tympanic sinus |
| 19
.
| Upper pointer: Promontory Lower pointer: Fenestrated cochlear fossa |
| 20
.
| Chorda tympani |
| 21
.
| Tympanic plexus |
| 22
.
| Tympanic cells |
| 23
.
| Facial nerve (VII) |
| 24
.
| Tubal branch of tympanic plexus |
| 25
.
| Stylomastoid artery |
| 26
.
| Styloid process |
| 27
.
| Internal jugular vein |
