| A | B |
|---|
| pectoralis major | flexes, adducts and medially rotates arm |
| latissimus dorsi | extends adducts and medially rotates arm |
| deltoid muscles clavo-anterior acomio-lateral spino-posterior | abducts arm |
| supraspinatus | abducts and stabilizes humerus |
| intraspinatus | lateral rotation of humerus |
| teres major | extends, medially rotates and adducts humerus |
| biceps brachii | flexes arm and forearm, supinates hand |
| brachialis | flexes forearm |
| brachioradialis | flexes forearm |
| triceps brachii | extends forearm, stablizes shoulder |
