Anterior sacral foramina

Bone: Anterior sacral foramina
Sacrum, pelvic surface. (Anterior sacral foramina labeled at right.
Latin foramina sacralia anteriora
Gray's subject #24 106

At the ends of the transverse ridges of the pelvic surface of the sacrum are seen the anterior sacral foramina (or pelvic sacral foramina), four in number on either side, somewhat rounded in form, diminishing in size from above downward, and directed lateralward and forward.

They give exit to the anterior divisions of the sacral nerves and entrance to the lateral sacral arteries.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.