Posterior border of petrous part - Margo posterior partis petrosae

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Description

The posterior angle is intermediate in length between the superior and the anterior. Its medial half is marked by a sulcus, which forms, with a corresponding sulcus on the occipital bone, the channel for the inferior petrosal sinus. Its lateral half presents an excavation—the jugular fossa—which, with the jugular notch on the occipital, forms the jugular foramen; an eminence occasionally projects from the center of the fossa, and divides the foramen into two.


Text by Antoine Micheau, MD - Copyright IMAIOS

Anatomical hierarchy

General Anatomy > Bones; Skeletal system > Axial skeleton > Cranium > Temporal bone > Petrous part > Posterior border of petrous part

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