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Serratus Posterior Inferior
Region: Back Muscles · All back muscles
Serratus Posterior Inferior at a glance
| Origin | Spinous processes of T11–L2 |
|---|---|
| Insertion | Lower borders of ribs 9–12 |
| Actions | Depresses ribs 9–12 (helper in breathing out) |
| Nerve supply | Ventral rami of T9–T12 |
More Back 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.