Pterygomaxillary fissure

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Pterygomaxillary fissure
Gray189.png
Left infratemporal fossa. (Pterygomaxillary fissure labeled at bottom left.)
Latinfissura pterygomaxillaris
Gray'sp.185
TAA02.1.00.026
FMAFMA:76627
Anatomical terminology
 
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Pterygomaxillary fissure
Gray189.png
Left infratemporal fossa. (Pterygomaxillary fissure labeled at bottom left.)
Latinfissura pterygomaxillaris
Gray'sp.185
TAA02.1.00.026
FMAFMA:76627
Anatomical terminology

The pterygomaxillary fissure is a fissure of the human skull. It is vertical, and descends at right angles from the medial end of the inferior orbital fissure; it is a triangular interval, formed by the divergence of the maxilla from the pterygoid process of the sphenoid.

It connects the infratemporal with the pterygopalatine fossa, and transmits the terminal part of the maxillary artery. The posterior superior alveolar nerve of the maxillary nerve goes from the pterygopalatine fossa to the infratemporal region via this fissure.

In older texts, the pterygomaxillary fissure is sometimes called the pterygopalatine fissure.

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This article incorporates text from a public domain edition of Gray's Anatomy.