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Muscles > Hand & Forearm > Flashcards

Hand & Forearm Flashcards

1
Q

ulnar deviators (2)

A

flexor carpi ulnaris, extensor carpi ulnaris

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2
Q

supinators of forearm (2)

A

biceps brachii, supinator

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3
Q

extensor carpi radialis longus

A

O: lateral supercondylar ridge & lateral epicondyle of humerus (posterior)
I: base of 2nd metacarpal
A: extension & radial deviation of wrist
N: radial nerve (C6, C7)

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4
Q

flexor carpi radialis

A

O: common flexor tendon from medial epicondyle of humerus (anterior)
I: bases of 2nd & 3rd metacarpals
A: flexion & radial deviation of wrist
N: Median nerve (C6, C7)

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5
Q

extensor carpi ulnaris

A

O: common extensor tendon from lateral epicondyle of humerus
I: base of 5th metacarpal
A: extension & ulnar deviation of wrist
N: radial nerve (C6, C7, C8)

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6
Q

palmaris longus

A

O: common flexor tendon from medial epicondyle of humerus (anterior)
I: palmar aponeurosis
A: assists flexion of wrist
N: Median nerve (C6, C7)

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7
Q

extensor carpi radialis brevis

A

O: common extensor tendon from lateral epicondyle of humerus (posterior)
I: base of 3rd metacarpal
A: extension of wrist
N: radial nerve (C6, C7)

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8
Q

wrist flexors (3)

A

flexor carpi ulnaris, flexor carpi radialis, palmaris longus

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9
Q

radial deviators (2)

A

flexor carpi radialis, extensor carpi radialis longus

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10
Q

wrist extensors (3)

A

extensor carpi radialis longus, extensor carpi radialis brevis, extensor carpi ulnaris

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11
Q

flexor carpi ulnaris

A

O: common flexor tendon from medial epicondyle of humerus (posterior)
I: pisiform, hamate, base of 5th metacarpal (anterior)
A: flexion & ulnar deviation of wrist
N: Ulnar nerve (C8, T1)

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12
Q

extrinsic flexors of digits 2-5 (2)

A

flexor digitorum superficialis, flexor digitorum profundus

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13
Q

pronators of forearm (2)

A

pronator teres, pronator quadratus

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14
Q

flexor digitorum superficialis

A

O: medial epicondyle of humerus; coronoid process oblique line of radius
I: sides of middle phalanges of digits 2-5
A: flexion of PIP of digits 2-5
N: median nerve (C7, C8, T1)

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15
Q

flexor digitorum profundus

A

O: middle of anterior ulna & interosseous membrane
I: bases of distal phalanges of digits 2-5
A: flexion of DIP of digits 2-5
N: median nerve (C8, T1)

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16
Q

pronator teres

A

O: proximal medial epicondyle of humerus; coronoid process of ulna
I: middle of lateral shaft of radius
A: pronation (resisted), assists in elbow flexion
N: Median nerve (C6, C7)

17
Q

pronator quadratus

A

O: anterior, distal 1/4 of ulna
I: anterior, distal 1/4 of radius
A: pronation of forearm
N: Median nerve (C8, T1)

18
Q

supinator

A

O: lateral epicondyle of humerus, adjacent surface of ulna (posterior)
I: lateral, anterior & posterior surfaces of proximal 1/3 of radius
A: supination of forearm
N: Radial (C6)

19
Q

flexor pollicis longus

A

O: middle of anterior surface of radius; interosseous membrane
I: distal phalanx of thumb
A: flexion of IP joint of thumb
N: median nerve (C8, T1)

20
Q

extensor digitorum

A

O: common extensor tendon from lateral epicondyle of humerus
I: base of the proximal phalanges of digits 2-5 (dorsal surface)
A: extension of MP joints of digits 2-5
N: radial nerve (C6, C7, C8)

21
Q

extensor digiti minimi

A

O:common extensor tendon from lateral epicondyle of humerus
I: extensor expansion of 5th finger
A: extension of MP joint of little finger
N: radial nerve (C6, C7, C8)

22
Q

extensor indicis

A

O: posterior ulna and interosseous membrane
I: extensor expansion of 2nd finger
A: extension of the MP joint of the index finger
N: radial nerve (C6, C7, C8)

23
Q

abductor pollicis longus

A

O: posterior ulna, radius and interosseous membrane
I: base of 1st metacarpal
A: abduction of carpometacarpal joint of thumb
N: radial nerve (C6, C7)

24
Q

extensor pollicis longus

A

O: posterior ulna and interosseous membrane
I: base of distal phalanx of thumb
A: extension of IP joint of thumb
N: radial nerve (C6, C7, C8)

25
Q

extensor pollicis brevis

A

O: posterior surface of radius and interosseous membrane
I: base of proximal phalanx of thumb
A: extension of metacarpophalangeal joint of thumb
N: radial nerve (C6, C7)

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