Lab 4 - Image 7
The humeral head (1) of the deep digital flexor m. is being pulled by forceps. The small radial head (2) attaches to the radius. The ulnar head (3) originates from the ulna. The deep layer of flexor retinaculum (asterisk) has been cut to release the tendon (arrow) of the deep digital flexor m.
Other caudal-group muscles are: superficial digital flexor m. (4); flexor carpi ulnaris m. (5); flexor carpi radialis m. (6); and pronator teres m. (7).