a/p muscle labs

occipitofrontalis, front of forehead, elevates eyebrows

orbicular occuli, around eye, squinting

orbicularis oris, lips, pursing

masseter, side, jaw, stronger than temporalis, chewing, closing jaw

temporalis, temporal bone, chewing

sternocleidomastoid, lateral flexion, rotation to opposite side, cervicle flexion

erector spinae, three muscles, primary back extensor, extend spine, posture

iliocostalis, lateral, ilium to each rib

longissimus, middle, base of skull to sacrum, longest

spinalis, closet to spine, medial

external intercostals, between ribs, inhaling (elevation of ribs), out to in

internal intercostals, exhaling (depression of ribs), in to out

diaphragm, inhaling

rectus abdominis, abs, long, skinny, superficial, trunk flexion

external oblique, superficial, wraps around, work with internal, trunk flexion

internal oblique, next layer down to external oblique, work with external, trunk flexion

transverse abdominis, deepest wrapping around whole way, straight across, holds organs in place

pectoralis minor, tiny, attaches to ribs (3,4, 5), attaching to coracoid process, pulls scapula forward (protraction)

serratus anterior, looks likes fingers, open rib cage, protecting scapula

big diamond on back, many lines of fiber, cervical extension, horizontal extension/horizontal abduction, scapular elevation

levator scapula, elevates scapula

rhomboideus major, retraction

rhomboideus minor, on top of major, smaller, retraction

pectoralis major, multiple lines of fiber, should adduction, shoulder flexion, shoulder internal rotation

latissimus dorsi, lats, many lines of fiber, attaches to spine, twist to humerus, lat pulldown (adduction), hyperextension/extension of shoulder, internal rotation of shoulder

deltoid, very superficial, cap, roof of shoulder, anterior - horizontal adduction, posterior - horizontal extension/abduction, middle - abduction

teres major, inferior angle to humerus, below minor, internal rotation of humerus, adduction, extension (pulls humerus backwards)

supraspinatus, above spine of scapula, abduction

infraspinatus, below spine of scapula, external rotation

teres minor, above major, more to head of humerus, external rotation

subscapularis, anterior, big, internal rotation

triceps brachii, back, crosses three joints, elbow extension, shoulder extension

biceps brachii, front, flexion of elbow, flexion of shoulder, supination

half way down humerus, crosses elbow, flexion of elbow

brachioradialis, thumb side, elbow, distal end of humerus, forms v with pronator teres, flexion of elbow

pronator teres, short, pronation

flexor capri radialis, flexion of wrist, radial deviation

palmaris longus, goes to palm wrist flexion

flexor carpi ulnaris, pinky side, flexion of wrist, ulnar deviation (in)

flexor digitorum superficialis, underneath palmaris, flexion of digits

flexor pollicus longus, thumb side, deep, flexion of thumb

flexor digitorum profundus, fingers, medial, flexion of digits

extensor carpi radialis longus, elbow, wraps around front, thumb side, wrist extension

extensor carpi radialis brevis, short ,wrist extension, radial deviation/abduction

down to wrist, extends digits

extensor carpi ulnaris, by bone, down to wrist, extends wrist, ulnar deviation

form back to front, supination

abductor pollicis longus, closest to thumb side, abduct thumb

extensor pollicis brevis, shorter, extend thumb

extensor pollicis longus, extend thumb