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MSK extras > muscles of the posterior forearm > Flashcards

muscles of the posterior forearm Flashcards

1
Q

what are the superficial muscles of the posteior forearm?

A
  • brachioradialis
  • extensor carpi radialis longus
  • extensor carpi radialis brevis
  • extensor digitorum
  • extensor digiti minimi
  • extensor carpi ulnaris
  • anconeus
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2
Q
  1. what is the origin of brachioradialis?
  2. what is the insertion of brachioradialis?
  3. what is the action of brachioradialis?
  4. what is the innervation of brachioradialis?
A
  1. lateral supracondylar ridge
  2. radius
  3. elbow flexion
  4. radial nerve
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3
Q
  1. what is the origin of extensor carpi radialis longus?
  2. what is the insertion of extensor carpi radialis longus?
  3. what is the action of extensor carpi radialis longus?
  4. what is the innervation of extensor carpi radialis longus?
A
  1. suprachondylar ridge
  2. metacarpal II + III
  3. wrist extension + wrist abduction
  4. radial nerve
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4
Q
  1. what is the origin of extensor carpi radialis brevis?
  2. what is the insertion of extensor carpi radialis brevis?
  3. what is the action of extensor carpi radialis brevis?
  4. what is the innervation of extensor carpi radialis brevis?
A
  1. lateral epicondyle
  2. metacarpal II +III
  3. wrist extension + wrist abduction
  4. radial nerve
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5
Q
  1. what is the origin of extensor digitorum?
  2. what is the insertion of extensor digitorum?
  3. what is the action of extensor digitorum?
  4. what is the innervation of extensor digitorum?
A
  1. lateral epicondyle
  2. middle phalanx and distal phalanx II - V
  3. extends fingers II - V at MCPJ and IPJ
  4. radial nerve
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6
Q
  1. what is the origin of extensor digiti minimi?
  2. what is the insertion of extensor digiti minimi?
  3. what is the action of extensor digiti minimi?
  4. what is the innervation of extensor digiti minimi?
A
  1. lateral epicondyle
  2. extensor hood
  3. extends little finger + wrist extension
  4. radial nerve
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7
Q
  1. what is the origin of extensor carpi ulnaris?
  2. what is the insertion of extensor carpi ulnaris?
  3. what is the action of extensor carpi ulnaris?
  4. what is the innervation of extensor carpi ulnaris?
A
  1. lateral epicondyle
  2. metacarpal V
  3. wrist extension + wrist adduction
  4. radial nerve
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8
Q
  1. what is the origin of anconeus?
  2. what is the insertion of anconeus?
  3. what is the action of anconeus?
  4. what is the innervation of anconeus?
A
  1. lateral epicondyle
  2. olecranon
  3. extends elbow, stabalises elbow + adducts ulnar during pronation
  4. radial nerve
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9
Q

what are the deep muscles of the posterior forearm?

A
  • supinator
  • abductor pollicis longus
  • extensor pollicis longus
  • extensor polilicis brevis
  • extensor indicis proprius
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10
Q
  1. what is the origin of supinator?
  2. what is the insertion of supinator?
  3. what is the action of supinator?
  4. what is the innervation of supinator?
A
  1. lateral epicondyle
  2. radius
  3. supination
  4. radial nerve
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11
Q
  1. what is the origin of abductor pollicis longus?
  2. what is the insertion of abductor pollicis longus?
  3. what is the action of abductor pollicis longus?
  4. what is the innervation of abductor pollicis longus?
A
  1. interosseous membrane
  2. metacarpal I
  3. thumb abduction
  4. radial nerve
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12
Q
  1. what is the origin of extensor pollicis longus?
  2. what is the insertion of extensor pollicis longus?
  3. what is the action of extensor pollicis longus?
  4. what is the innervation of extensor pollicis longus?
A
  1. ulnar
  2. distal phalanx of thumb
  3. extends all joints of thumb
  4. radial nerve
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13
Q
  1. what is the origin of extensor pollicis brevis?
  2. what is the insertion of extensor pollicis brevis?
  3. what is the action of extensor pollicis brevis?
  4. what is the innervation of extensor pollicis brevis?
A
  1. radius
  2. proximal phalanx of thumb
  3. extends at MCPJ + CMCJ
  4. radial nerve
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14
Q
  1. what is the origin of extensor indicis proprius?
  2. what is the insertion of extensor indicis proprius?
  3. what is the action of extensor indicis proprius?
  4. what is the innervation of extensor indicis proprius?
A
  1. ulnar
  2. extensor hood of index finger
  3. extends index finger
  4. radial nerve
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MSK extras (23 decks)

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