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Pyramidalis
Region: Abdominal & Pelvic Muscles · All abdominal & pelvic muscles
Pyramidalis at a glance
| Origin | Front of the pubis and pubic symphysis |
|---|---|
| Insertion | Linea alba, between the umbilicus and pubis |
| Actions | Tenses the linea alba |
| Nerve supply | Subcostal nerve (T12) |
◆ Good to know
A small variable triangle inside the rectus sheath; it is absent in about one in five people.
More Abdominal & Pelvic Muscles
Please note: This page is an anatomy education summary for students and curious readers, not medical advice. Attachment points are given in their classic short form; individual anatomy varies, and detailed dissection-level descriptions belong in an anatomy atlas.