🤩IDENTIFICATION: Muscles acting on glenohumeral and humeroulnar joints + everything else in the arm

pectoralis major: adduct, flex, and medially rotate arm

pectoralis minor

serratus anterior: protract and medially rotate sholder

trapezius: elevate, retract, and laterally rotate shoulder

levator scapulae: elevate and retract shoulder

rhomboid major: retract shoulder

rhomboid minor

latissimus dorsi: abbduct, extend, and medially rotate arm

deltoid: flex, abduct, and rotate arm O:arromin and spine of scapuls;acromal (lateral_ portion of clavicle I: deltoid tubersoty of humerus

coracobrachialis

supraspinatus (rotator cuff): abduct arm and stablize shoulder O: supraspinous fossa I: greater tubercle

infraspinatus (rotator cuff): laterally rotate arm and stabilize shoulder O:lateral border of scapula I:greater tubercle

teres minor (rotator cuff)": laterally rotate arm and stabilize shoulder O: lateral border of scapula I: greater tubercle

subscapularis (rotator cuff) medially rotate arm and stavilize shoulder O:subscapular fossa I: lesser tubercle

teres major

biceps brachii (long head) flex and supinate forearm O: superior aspect, glenoid fossa I: radial tuberosity

Biceps brachii (short head): flex and supinate forearm O: coracoid process I: radial tuberosity

brachialis: flex forearm O:anterior aspect, humeral shaft I:cornoid process of ulna (directly underneith the biceps brachii)

triceps brachii medial head: extend forearm and adduct arm O: surgical neck of humerus I:olecranon process (it is underneith the other 2 triceps)

triceps brachii lateral head: extend forearm and adduct arm O:surgical neck of humerus I: olecranon process

triceps brachii long head: extend forearm and adduct arm O:inferior aspect, glenoid fossa I: olecranon process

brachioradialis: flex forearm when midprone

anconeus (right under/inferior to the triceps

pronator quadratus: pronation of forearm

pronator teres: pronation of forearm

supinator: supination of forearm

flexor carpi radialis: flexion, abduction of hand at wrist

flexor carpi ulnaris: flexition adduction of hand at wrist

palmaris longus

flexor digitorum superficalis: flex digits II-V at proximal interphalangeal joints (this is underneath the palmaris longus, flexor carpi radialis, flexor carpi ulnaris, and pronator teres.

flexor digitorum profundus: flex digits II-V at proximal interphalangeal joints (under (deep to) the fexor digitorum superficalis)

flexor pollcis longus: flex pollex (under the flexor digitorum superficialis)

extensor carpi radialis longus: extension, abduction of hand at wrist

extensor carpi radialis brevis: extension, abduction of hand at wrist

extensor digitorum: extend digits II-V, abduct digits II-v during extension

extensor digiti minimi: extend digit V

extensor carpi ulnaris: extend, adduct hand at wrist

extensor indicis: extend digit II

extensor pollicis longus: extend, adduct pollex (deep to the extensor digitorum and extensor digiti minimi)

abductor pollicis longus: abduct, extend pollex