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Pectoralis Minor
Region: Chest Muscles · All chest muscles
Pectoralis Minor at a glance
| Origin | Ribs 3, 4 and 5 |
|---|---|
| Insertion | Coracoid process of the scapula |
| Actions | Pulls the shoulder blade forward and down; Lifts the ribs in forced breathing in |
| Nerve supply | Medial pectoral nerve (C8–T1) |
◆ Good to know
The brachial plexus cords and axillary vessels pass deep to it — it is the landmark that divides the axillary artery into its three parts.
More Chest 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.