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Posterior Forearm Muscles

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sakutuhi's version from 2017-04-08 15:38

Superficial Layer

Question Answer
Brachioradialis - originlateral supracondylar ridge of humerus
Brachioradialis - insertiondistal, lateral radius
Brachioradialis - nerveradial nerve
Brachioradialis - actionflex forearm
memorize

Superficial layer

Question Answer
Extensor Carpi ulnaris - originlateral epicondyle (common extensor tendon), posterior ulna
Extensor Carpi ulnaris - insertionmetacarpal 5
Extensor Carpi ulnaris - nerveradial nerve
Extensor Carpi ulnaris - actionulnar deviation and extension of wrist
memorize

Superficial Layer

Question Answer
Extensor Carpi Radialis Brevis - originlateral epicondyle of humerus, common extensor tendon
Extensor Carpi Radialis Brevis - insertionbase of 3rd metacarpal
Extensor Carpi Radialis Brevis - nerveradial nerve
Extensor Carpi Radialis Brevis - actionextention and abduction of wrist
memorize

Superficial Layer

Question Answer
Extensor Digitorum - originlateral epicondyle of humerus, common extensor tendon
Extensor Digitorum - insertionextensor expansions of 4 fingers
Extensor Digitorum - nerveradial nerve
Extensor Digitorum - actionextend 4 fingers and extend hand
memorize

Superficial Layer

Question Answer
Extensor Digiti Minimi - originlateral epicondyle of humerus, common extensor tendon
Extensor Digiti Minimi - insertionextensor expansions of 5th digit
Extensor Digiti Minimi - nerveradial nerve
Extensor Digiti Minimi - actionextend 5th digit
memorize

Superficial Layer

Question Answer
Lumbricals (1-4)tendons of FDP
Lumbricals (1-4) - insertionextensor expansions of digits 2-5
Lumbricals - nervelateral two - median nerve
medial two - ulnar nerve
Lumbricals - actionFlex MCP and extend at IP joint
memorize

Deep Layer

Question Answer
Abductor Pollicis Longus - originposterior surface of ulna and radius, interosseous membrane
Abductor Pollicis Longus - insertionbase of 1st metacarpal
Abductor Pollicis Longus - nerveradial nerve
Abductor Pollicis Longus - actionabducts and extends thumb
memorize

Deep Layer

Question Answer
Extensor Pollicis Longus - originposterior surface of ulna, interosseous membrane
Extensor Pollicis Longus - insertionbase of distal phalanx of thumb
Extensor Pollicis Longus - nerveradial nerve
Extensor Pollicis Longus - actionextend thumb at MP and IP joint
memorize

Deep Layer

Question Answer
Extensor Pollicis Brevis - originposterior surface of radius, interosseous membrane
Extensor Pollicis Brevis - insertionbase of proximal phalanx of thumb
Extensor Pollicis Brevis - nerveradial nerve
Extensor Pollicis Brevis - actionextends thumb
memorize

Deep Layer

Question Answer
Extensor Indicis - originposterior surface of ulna, interosseous membrane
Extensor Indicis - insertionextensor expansion of index finger
Extensor Indicis - nerveradial nerve
Extensor Indicis - actionextend index finger
memorize

Deep Layer

Question Answer
Supinator - originlateral epicondyle, radial collateral and anular ligaments, supinator fossa, supinator crest
Supinator - insertionanterior, lateral, and posterior surfaces of proximal radius
Supinator - nerveradial nerve
Supinator - actionsupination of forearm
memorize