otic capsule n.
The embryonic cartilage capsule that surrounds the inner ear mechanism and develops into bony tissue.
Examine the otic capsule by taking successive slices through it to show the labyrinth of the ear.
The posterior wall of the otic capsule we have designated opisthotic in the figure.
Internally, it must lie against the otic capsule below the tabular, partially concealing the stapes.
Anterior to the otic capsule the lateral wall of the braincase cannot be seen, and may not have been ossified.
The posterior terminus of the medial branch of the pterygoid lies ventral to the lateral part of the otic capsule.
The exoccipital extends laterally, occupying the posterior face of the otic capsule.
The anteroventral edge of the otic capsule remains cartilaginous.
The operculum expands medially to merge with the main part of the otic capsule (Fig. 20g).