Petrotympanic fissure

（重定向自Glaserian fissure）

The petrotympanic fissure (also known as the squamotympanic fissure) is a fissure in the temporal bone that runs from the temporomandibular joint to the tympanic cavity.

The mandibular fossa is bounded, in front, by the articular tubercle; behind, by the tympanic part of the bone, which separates it from the external acoustic meatus; it is divided into two parts by a narrow slit, the petrotympanic fissure.

单词	Glaserian fissure
释义	Glaserian fissure 英语百科 Petrotympanic fissure （重定向自Glaserian fissure） The petrotympanic fissure (also known as the squamotympanic fissure) is a fissure in the temporal bone that runs from the temporomandibular joint to the tympanic cavity. The mandibular fossa is bounded, in front, by the articular tubercle; behind, by the tympanic part of the bone, which separates it from the external acoustic meatus; it is divided into two parts by a narrow slit, the petrotympanic fissure.
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