Anterior Forearm Flashcards
muscles of superficial layer of anterior forearm (medial to lateral)
Flexor carpi ulnaris
Palmaris longus
Flexor carpi radialis
Pronator teres
muscles of intermediate layer of anterior forearm
flexor digitorum SUPERFICIALIS M
muscles of deep layer of anterior forearm (medial to lateral)
flexor digitorum profundus
Flexor pollicus longus
Pronator quadratus
cutaneous innervation of lateral proximal arm
axillary n
cutaneous innervation of the lateral distal arm
radial n
also innervates the anatomical snuffbox
cutaneous innervation of the armpit to medial epicondyle
medial brachial cutaneous n
cutaneous innervation of medial forearm (and some biceps)
medial antibrachial n
cutaneous innervation of lateral forearm
lateral antibrachial n
cutaneous innervation of 4th and 5th digits
ulnar n
cutaneous innervation of 1 2 3 digits
median n
superficial muscles of the anterior compartment
pronator teres
flexor carpi radialis
palmaris longus
flexor carpi ulnaris** (innervated by ulnar n)
intermediate muscles of the anterior compartment of the forearm
flexor digitorum superficialis
deep muscles of the anterior compartment of the forearm .
flexor digitorum profundus*** (digits 4,5 innervated by ulnar)
flexor pollicis longus
pronator quadratus
all muscles of the anterior compartment of the forearm are innervated by ________ n with the exception of what 2 muscles
all are median nerve innervated except
flexor carpi ulnaris
flexor digitorum profundus (to fingers 4,5)
which are innervated by the ulnar n
origin/insertion/innervation/action of pronator teres
humeral head/meidal epicondyle –> lateral radius
median n
forearm pronation, weak elbow flexion
origin/insertion/innervation/action of flexor carpi radialis m
medial epicondyle –>base of 2nd metacarpal
median n
wrist flexion and abduction
radial deviation of hand
abduction of the wrist is performed by
flexor carpi radialis
and flexor pollicis longus
origin/insertion/innervation/action of palmaris longus
medial epicondyle –> palmar aponeurosis
Median n
flexion tightens palmar aponeurosis
weak elbow flexion
origin/insertion/innervation/action of flexor carpi ulnaris
humeral head-medial epicondyle ulnar head - olecranon inserts on pisiform, hook of hamate, base of 5th metacarpal ulnar n flexion and adduction of hand
adduction of the wrist is performed by this muscle
flexor carpi ulnaris m
origin/insertion/innervation/action of flexor digitorum superficialis m
humeral-ulnar head: medial epicondyle/cornoid process
radial head: upper anterior border of radius
inserts into sides of middle phalanges of digits 2-5
median n
weak elbow flexion
wrist, MCP, PIP joint flexion at 2-5
origin/insertion/innervation/action of flexor digitorum profundus m
ulna and IO membrane to distal phalanges of 2-5 digits
median n (digits 2,3)
ulnar n (digits 4,5)
wrist, MCP, PIP, DIP, of digits 2-5 == flexion
origin/insertion/innervation/action of flexor pollicis longus m
radius and IO membrane to distal phalanx of thumb (palmar surface)
median n
wrist flexion and abduction of hand
flexion at carpometacarpal joint of thumb, MCP and IP joints
origin/insertion/innervation/action of pronator quadratus
distal quarter of anterior ulna to distal quarter of anterior radius
median n
pronation of hand
stabilizes distal radioulnar joint