翼上顎裂 - Fissura pterygomaxillaris
The pterygomaxillary fissure 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 infra temporal fossa with the pterygopalatine fossa, and transmits the terminal part of the internal maxillary artery.
This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).
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