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Opponens Pollicis
Region: Forearm & Hand Muscles · All forearm & hand muscles
Opponens Pollicis at a glance
| Origin | Flexor retinaculum and trapezium |
|---|---|
| Insertion | Lateral border of the first metacarpal (thumb) |
| Actions | Brings the thumb across the palm to meet the fingers (opposition) |
| Nerve supply | Median nerve, recurrent branch (C8–T1) |
◆ Good to know
Opposition is the movement that makes the human hand a precision tool — and the one most missed when the median nerve is injured.
More Forearm & Hand 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.