Sigmoid sulcus

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Sigmoid sulcus
Left temporal bone. Inner surface. (Sigmoid sulcus visible at center left.)
Base of the skull. Upper surface. (Sigmoid sulcus not labeled, but is visible near mastoid foramen.)
Latin sulcus sinus sigmoidei ossis temporalis
TA A02.1.06.006
FMA 55499
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.


This article incorporates text in the public domain from page 142 of the 20th edition of Gray's Anatomy (1918)

External links[edit]

  • "Anatomy diagram: 34257.000-2". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2014-01-01.