Intrinsic muscle actions

infraspinatus

stabilizes shoulder + flexes shoulder + abducts limb at joint

supraspinatous

stabilizes shoulder + extends shoulder

coracobrachialis

stabilizes shoulder

subscapularis

stabilizes shoulder + adducts limb at joint

deltoideus

flexes shoulder

teres major

flexes shoulder

teres minor

flexes shoulder

triceps - long head

extends elbow + flexes shoulder

triceps lateral head

extends elbow

triceps medial head

extends elbow

triceps accessory head

extends elbow

anconeus

extends elbow

tensor fasciae antebrachii

extends elbow

biceps

flexes elbow + extends shoulder joint

brachialis

flexes elbow

flexor carpi radialis

flexes carpal joints

superficial digital flexor

flexes carpal, metacarpophalangeal, and proximal interphalangeal joints of digits II-V

DDF

flex carpal joints, flex digital joints of all 5 digits

flexor carpi ulnaris

flex carpal joints

ulnaris lateralis

flex carpal joints, abducts manus at carpal joint

extensor carpi radialis

extend carpal joints + minimal aid in elbow flexion

common digital extensor

extends carpal and digital joints

lateral digital extensor

extends carpal and digital joints III-V

brachioradialis

flex elbow + can pronate/supinate

pronator teres

pronate antebrachium/manus, aid in elbow flexion

supinator

supinate antebrachium/manus, aid in elbow flexion

abductor pollicis longus

abducts digit I, extends carpus

sternohyoideus

pulls tongue/larynx caudally

sternothyroideus

pulls tongue/larynx caudally

sternocephalicus

pulls head/neck to the side

sternooccipitus

pulls head/neck to the side

sternomastoideus

pulls head/neck to the side