A fissure between the tympanic and petrous portions of the temporal bone; it transmits the chorda tympani nerve through a small patent portion, the anterior canaliculus of the chorda tympani.
Synonyms: fissura petrotympanica, glaserian fissure.
(05 Mar 2000)
petrosquamous fissure, petrostaphylinus, petrostearine < Prev | Next >
petrous, petrous bone, petrous ganglion
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