Forearms: Flexor digitorum superficialis, flexor and pollicis longus as well as flexor carpi radialis and carpi ulnaris. Shoulders: Deltoids and rotator cuff muscles.

Anterior interosseous nerve, which supplies the flexor pollicis longus, pronator quadratus, and flexor digitorum profundus muscles to control the thumb. Phrenic nerve, which supplies the diaphragm.

Here’s a look at all of the details we have so far. When will Grey’s Anatomy Season 22 premiere? ABC has announced that Grey’s Anatomy will return for its next season in the fall of 2025.