Posteror view of petrous part of the temporal bone
| Term name | Layer | |
|---|---|---|
| 1 | Internal acoustic meatus | Layer 1 |
| 2 | Internal acoustic opening | Layer 1 |
| 3 | Arcuate eminence | Layer 1 |
| 4 | Apex of petrous part | Layer 1 |
| 5 | Groove for inferior petrosal sinus | Layer 1 |
| 6 | Intrajugular process | Layer 1 |
| 7 | Jugular notch | Layer 1 |
| 8 | Posterior surface of petrous part | Layer 1 |
| 9 | Groove for superior petrosal sinus | Layer 1 |
| 10 | Opening of vestibular canaliculus | Layer 1 |
| 11 | Superior border of petrous part | Layer 1 |
| 12 | Groove for sigmoid sinus | Layer 1 |
| 13 | Mastoid foramen | Layer 1 |