Posterior compartment of forearm Flashcards
superficial layer of posterior forearm muscles
and positions/what looks like
brachioradiais-most lateral
extensor carpir radialis longus-second most lateral
extesor carpi radialis brevis-starts more distally down arm
extensor digitorum-big guy
extensor digiti minimi-most medial small branch of extensor digitorum
extensor carpi ulnaris-most medial
brachioradiais attachements
distil surface of distal humorous
and lateral intermusclar septum of arm
styloid process of radius
brachioradiais innervation
radial nerve c5-6
brachioradiais actions
weak flexor of forearm at elbow
most effective where forearm is mid pronated
DUMBBELL CURL
extensor carpir radialis longus attachemnts
lateral supracondylar ridge of distal humooous and from lateral inter muscular septum of forearm
base of 2nd metacarpal
extensor carpir radialis longus innervation
radial nerve c6-7
extensor carpir radialis longus actions
extend and abduct hand at wrist
weakly flex forearm at elbow
proximal attachment of extensor digitum, extensor digit minim, and extensor carpi ulnaris
lateral epicondyle of humorous via common extensor tendon
extensor carpi radoialis brevis attachments
lateral epichondyle
base of 3rd metacarpal
deep muscles of posterior forearm 5
abductor pollicis longus-most lateral, very thick
extensr pollicis brevis-second most lateral
exteonsor pollicis lognus-longer than braves
extensofor indicis-right under longus
supinator-under/between carpiradialis longs and brachioradialis (so lateral)
abductor pollicis longus attachements
dorsal surface of radius, ulna, and interosseous membrane
inserts into base of 1st metacarpal
abductor pollicis longus innervation
radial nerve c7-8
abductor pollicis longus actions
abudct hand at radiocarpal joint of wrist
abduct thumb at CMC joint of thumb
extensr pollicis brevis attachments
interooseous membrane and posterior surface of radius
inserts into base of proximal phanlax of thumb
extensr pollicis brevis innervations
radial nerve c7-8
extensr pollicis brevis actions
abudct hand at radiocarphal joint
extend thumb at cmc and MCP jonts
exteonsor pollicis lognus attchments
posterior surface of ulna and interosseous membrane
base of the distal phenix of the thumb
exteonsor pollicis lognus innervations
radial nerve c7-8
exteonsor pollicis lognus actions
extend and abduct hand at wrist
adduct thumb at CMC joint
extend thumb at MCP and IP joints
extensofor indicis attchments
posterior surface of ulna and interosseous membrane
inserts into posterior digital opinion of 2nd digit
extensofor indicis innervations
radial nerve c7-8
extensofor indicis actions
extend hand at wrist
extend 2nd digit at MCP and PIP and DIP joints
supinator attachemnts
olecranon, lateral epicondyle of hombres, radial collateral ligaments, and annular ligament of radius
inserts onto radius between radial tuberous y and insertion of pronator trees
supinator innervation
radial nerve c6-7
supinator actions
suiantes forarm at radioulnar joint
neurovasculature of anterior forearm
posterior interosseoou s nerve-termination of deep radial nerve as emerges from supinator
posterior interosseous artery-runs along with posterior interroseous nerve
radial artery-appears coming out of extensor retinaculum
snuff box
what bounds it-ant/post/bottom
whats inside it
anteriorly-tendons of abductor policies longus and extensor policies brevis
posteriorly by tendon of extensor policies longus
floor=scaphoid bone
radial artery
