Flexor Carpi Radialis
The structure indicated is the flexor carpi radialis muscle.
The flexor carpi radialis is one of four muscles in the superficial layer of muscles in the anterior compartment of the forearm. The anterior compartment of the forearm consists of three layers of muscles:
- Superficial layer
- Intermediate layer
- Deep layer
Four muscles are located in the superficial layer (from lateral to medial):
All four muscles of the superficial layer have a common origin on the medial epicondyle of the humerus.
Origin: Medial epicondyle of humerus
Insertion: Bases of 2nd and 3rd metacarpals
Action: flexion and abduction of wrist
Innervation: median nerve
Learn more about the anatomy of the forearm muscles in this tutorial.