The temporal bone, transversal section of the petrous part.

Illustration of transversal section of the petrous portion of the temporale bone.

Term name Layer
1 Prominence of lateral semicircular canal Layer 1
2 Vestibule Layer 1
3 Anterior semicircular canal Layer 1
4 Facial canal Layer 1
5 Cochlea Layer 1
6 Carotid canal Layer 1
7 Apex of petrous part Layer 1
8 Opening of vestibular canaliculus Layer 1
9 Tympanic cavity Layer 1
10 Mastoid antrum Layer 1
11 Groove for sigmoid sinus Layer 1
12 Posterior semicircular canal Layer 1
13 Lateral semicircular canal Layer 1
14 External acoustic meatus Layer 1
15 Zygomatic process Layer 1
16 Mastoid cells Layer 1