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Rectus Abdominis
Region: Abdominal & Pelvic Muscles · All abdominal & pelvic muscles
Rectus Abdominis at a glance
| Origin | Pubic crest and pubic symphysis |
|---|---|
| Insertion | Xiphoid process and costal cartilages 5–7 |
| Actions | Flexes the trunk (sit-up motion); Compresses the abdomen |
| Nerve supply | Lower intercostal nerves (T7–T12) |
◆ Good to know
The 'six-pack' muscle, segmented by tendinous intersections and enclosed in the rectus sheath; separation of its two bellies (diastasis recti) is common after pregnancy.
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.