AnatomyDeck

Muscle

Extensor carpi radialis longus

Extends and abducts the wrist

Upper limbMuscular system

High-yield

Radial nerve (not the deep branch); extends and abducts the wrist.

Overview

A superficial extensor that extends and radially deviates the wrist, supplied by the radial nerve proper before it divides.

Reference facts

  • Origin

    Lateral supracondylar ridge of the humerus

  • Insertion

    Base of the 2nd metacarpal

  • Action

    Extends and abducts (radially deviates) the wrist

  • Innervation

    Radial nerve (C6, C7)

  • Blood supply

    Radial artery

Your notes