fart

muscle 

abductor pollicus longus

origin

posterior radius/ulna

insertion

thumb

action

flexes and extends thumb

muscle

biceps brachii

origin

short head: coracoid process of scapula, long head: supraglenoid tubercle of scapula, tendon in intertubercular sulcus

insertion

radial tuberosity

action

flexes and supinates forearm

(deep) muscle

brachialis

(deep) origin

distal humerus

(deep) insertion

ulnar coracoid process

(deep) action

flexes forearm

muscle

brachioradialis 

origin

distal humerus

insertion

styloid process of radius

action

flexes forearm

muscle

deltoid

origin

clavicle, scapula (acromion, spine) 

insertion

humerus, deltoid tuberosity

action

abduction of arm

muscle

extensor carpi radialis brevis

origin

lateral epicondyle humerus

insertion 

metacarpal 3

action

extends/abducts hand

muscle

extensor carpi radialis longus 

origin

humerus lateral epiphysis

insertion

metacarpal 2

action

extends/abducts arm

muscle

extensor carpi ulnaris

origin

lateral epicondyle humerus

insertion 

metacarpal 5

action

extends/abducts hand

muscle

extensor digitorum

origin

lateral epicondyle humerus

insertion

distal phalanges 2-5

action

prime mover extensor of digits 

muscle

extensor pollicis longus/brevis

origin

dorsal ulna and radius

insertion

thumb

longus: distal phalanx

brevis: proximal phalanx

action

extend thumb

muscle

flexor carpi radialis 

origin

medial epicondyle humerus

insertion

metacarpals 2, 3

action

flexor, abductor of hand

muscle

flexor carpi radialis

origin

medial epicondyle humerus

insertion

pisiform, hamate, base metacarpal 5

action

flexes, adducts hand

muscle

flexor digitorum profundus

origin

anterior ulna, coronoid process ulna 

insertion

distal phalanges digits 2-5

action

flexes distal phalanges

muscle

flexor digitorum superficialis

origin

medial epicondyle humerus, coronoid process ulna, shaft of radius

insertion

middle phalanges digits 2-5

action

flexes hand and fingers 

muscle

flexor pollicis longus

origin

radius anterior surface

insertion

distal thumb phalanx

action

flexes thumb

muscle

infraspinatus

origin

scapula: infraspinous fossa 

insertion

humerus: greater tubercle (posterior) 

action

lateral rotation of humerus 

muscle

pec major

origin

clavicle, sternum, 1st six ribs

insertion

humerus, greater tubercle

action

flexes, adducts, medially rotates arm

muscle

pec minor

origin

ribs 3-5 

insertion

scapula: coracoid process

action

protracts/depress scapula or elevate ribcage

muscle

pronator teres

origin

medial epicondyle humerus, coronoid process ulna 

insertion

radius diaphysis

action

forearm pronation

muscle

pronator quadratus 

origin

distal anterior ulna

insertion

anterior surface distal radius

action

pronates forearm

muscle

palmaris longus 

origin

medial epicondyle humerus

insertion

palmar aponeurosis, skin of palm

action

tenses skin and palm

muscle

subscapularis

origin

subscapular fossa 

insertion

lesser tubercle of humerus 

action

humerus: medial rotator, holds humerus in glenoid cavity 

muscle

supinator

origin

lateral epicondyle humerus, proximal ulna

insertion

radius proximal end

action

supinates arm

muscle

supraspinatus

origin

scapula, supraspinous fossa 

insertion

humerus: greater tubercle

action

abduction of humerus

muscle

teres major

origin

scapula posterior surface