Opponens pollicis

From Ganfyd

Jump to: navigation, search
Opponens pollicis
Opponens pollicis.GIF
Note: trans. carpal ligament = flexor retinaculum
System: Muscle
Function: Opposition of the thumb
Origin: Flexor retinaculum and tubercle of trapezium
Branches:
Insertion: Lateral border of thumb metacarpal
Arterial supply:
Venous drainage:
Lymphatic drainage:
Innervation: Recurrent branch of the median nerve (C8, T1)
Vertebral levels:
Search for Opponens pollicis in Gray's.

Opponens pollicis is a small muscle of the thenar eminence which allows opposition of the thumb

Contents

Shape

A small triangular muscle, opponens pollicis runs beneath abductor pollicis brevis within the thenar eminence, passing distolaterally to its insertion.

The Opponens pollicis is a small, triangular muscle, placed beneath Abductor pollicis brevis. It arises from the ridge on the greater multangular and from the transverse carpal ligament, passes downward and lateralward, and is inserted into the whole length of the metacarpal bone of the thumb on its radial side

Actions

Opposition of the thumb through the following:

Joints Affected

Origin

Insertion

Nerve Supply

Relations

Personal tools