muscles of forearm Flashcards
pronator teres origins and insertions
humeral - medial epicondyle
ulnar - coronoid process of ulna
pronator teres actions
pronation
flexes forearm
pronator teres innervation
median nerve
pronator quadratus origin and insertion
ulna -> radius
pronator quadratus action
pronation of hand
pronator quadratus innervation
median nerve
flexor carpi radialis origin and insertion
medial epicondyle -> metacarpals
flexor carpi radialis action
flexes hand at wrist joint
wrist abduction
flexor carpi radialis innervation
median nerve
palmaris longus origin and insertion
medial epicondyle -> retinaculum
palmaris longus action
flexes hand
palmaris longus innervation
median nerve
flexor carpi ulnaris origin and insertions
humeral head - medial epicondyle -> pisiform
ulnar head - olecranon -> pisiform
flexor carpi ulnaris action
flexion of wrist
adduction of hand
flexor carpi ulnaris innervation
ulnar nerve
flexor digitorum superficialis insertion
inserts at distal 4 phalanges
flexor digitorum superficialis action
flexes proximal interphalangeal joints
flexor digitorum superficialis innervation
median nerve
flexor digitorum profundus origin and insertion
interosseous membrane -> medial 4 digits
flexor digitorum profundus action
flexes distal interphalangeal joints and others
flexor digitorum profundus innervation
splits
medial = ulnar nerve
lateral = medial nerve
flexor pollices longus origin and insertion
interosseous membrane -> thumb
flexor pollices longus action
flexion of distal and proximal phalanx of thumb
flexor pollices longus innervation
median nerve
supinator origin and insertion
lateral epicondyle -> radius
supinator action
rotates radius to supinate forearm
supinator innervation
radial nerve
brachioradialis origin and insertion
humerus -> radius (styloid process)
brachioradialis action
flexes forearm
brachioradialis innervation
radial nerve
extensor carpi radialis longus origin and insertion
lateral supracondylar ridge of humerus -> metacarpal 2
extensor carpi radialis longus action
extension of hand
abduction of hand
extensor carpi radialis longus innervation
radial nerve
extensor carpi radialis brevis origin and insertion
lateral epicondyle -> 3rd metacarpal
extensor carpi radialis brevis action
extension of hand
abduction of hand
extensor carpi radialis brevis innervation
radial nerve
extensor digitorum origin and insertion
lateral epicondyle -> medial 4 digits
extensor digitorum action
extension of metacarpophalangeal and interphalangeal joints
wrist extension
extensor digitorum innervation
radial nerve
extensor digiti minimi origin and insertion
lateral epicondyle -> 5th digit
extensor digiti minimi action
extension of 5th digit
wrist extension
extensor digiti minimi innervation
radial nerve
extensor carpi ulnaris origin and insertion
lateral epicondule/ulna -> base of 5th metacarpal
extensor carpi ulnaris action
extension and adduction of wrist
extensor carpi ulnaris innervation
radial nerve
abductor pollicis longus origin and insertion
ulna/IM/radius -> 1st metacarpal
abductor pollicis longus action
abducts thumb and wrist
extends thumb
laterally rotates thumb
abductor pollicis longus innervation
radial nerve
extensor pollicis longus origin and insertion
ulna/im -> distal phalanx = thumb
extensor pollicis longus action
abduction of thumb
extends phalanx thumb
extensor pollicis longus innervation
radial nerve
extensor indicis origin and insertion
ulna/IM -> 2nd digit
extensor indicis action
extends all joints of index finger
extensor indicis innervation
radial nerve
contents of cubital fossa
- radial nerve
- biceps tendon
- brachial artery
- median nerve
nerve supply to anterior portion of arm
musculocutaneous nerve = passes through coracobrachialis