Fenestrae [noun]

The pro-otic lies in front of the exoccipital and together with the opisthotic forms the hind border of the fenestra ovalis.

During life the fenestra ovalis lodges the proximal end of the columellar chain.

There are in mammals four auditory ossicles forming a chain extending from the fenestra ovalis to the tympanic membrane.

This operation, however, necessitates the complete mastoid operation in order to freely expose the region of the fenestra ovalis.

Some authorities advise chiselling away of the margins of the fenestra ovalis.

Care must be taken not to injure the surface of the promontory, or the region of the fenestra ovalis and fenestra rotunda.

The bridge of bone between the fenestra ovalis and fenestra rotunda is then cut through by light taps on a very fine gouge.

Care must be taken not to work above the region of the fenestra ovalis or the facial nerve will probably be injured.

The fenestra postotica on skulls of ferox and especially muticus is not normally restricted by an opisthotic-exoccipital spur.

The protic encloses between it and the lateral occipital the fenestra ovalis, into which fits the columella of the ear.