Sigmoid sulcus

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Sigmoid sulcus
Gray138.png
Left temporal bone. Inner surface. (Sigmoid sulcus visible at center left.)
Gray193.png
Base of the skull. Upper surface. (Sigmoid sulcus not labeled, but is visible near mastoid foramen.)
Latin sulcus sinus sigmoidei ossis temporalis
Gray's p.142
TA A02.1.06.006
Anatomical terms of bone

The inner surface of the mastoid portion of the temporal bone presents a deep, curved groove, the sigmoid sulcus, which lodges part of the transverse sinus; in it may be seen the opening of the mastoid foramen.

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