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Intro to Anatomy > Forearm muscles OIAN > Flashcards

Forearm muscles OIAN Flashcards

1
Q

Flexor digitorum profundus action

A
  • origin: anterior surface of ulna
  • insertion: distal phalanges of fingers 2-5
  • action: flexes wrist and fingers 2-5
  • nerve supply: median and ulnar
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2
Q

Flexor digitorum superficialis action

A
  • origin: medial epicondyle
  • insertion: middle phalanges of fingers 2-5
  • action: flex wrist and fingers 2-5
  • nerve supply: median
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3
Q

Supinator insertion

A
  • origin: lateral epicondyle, proximal ulna
  • insertion: proximal end of radius
  • action: supinates forearm
  • nerve supply: radial
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4
Q

Palmaris longus action

A
  • origin: medial epicondyle
  • insertion: palmar aponeurosis
  • action: (weakly) flexes wrist
  • nerve supply: median
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5
Q

Flexor pollicis longus action

A
  • origin: anterior surface of radius
  • insertion: distal phalanx of thumb
  • action: flexes thumb
  • nerve supply: median
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6
Q

Name all muscles that pronate the forearm

A
  • pronator teres
  • pronator quadratus
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7
Q

Extensor carpi ulnaris insertion

A
  • origin: lateral epicondyle
  • insertion: base of 5th metacarpal
  • action: extends and abducts the wrist
  • nerve supply: radial
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8
Q

Name all muscles that abduct the wrist, include other functions of these muscles where applicable

A
  • Flexor carpi radialis also flexes wrist
  • Extensor carpi radialis longus and Extensor carpi radialis brevis also extend the wrist
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9
Q

Name all muscles that adduct the wrist, include other functions of these muscles where applicable

A
  • Flexor carpi ulnaris also flexes the wrist
  • Extensor carpi ulnaris also extends the wrist
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10
Q

Pronator quadratus origin

A
  • origin: anterior surface of distal ulna
  • insertion: anterior surface of distal radius
  • action: pronates forearm
  • nerve supply: median
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11
Q

Extensor pollicis brevis origin

A
  • origin: posterior surface of radius and ulna, interosseous membrane
  • insertion: proximal phalanx of thumb
  • action: extend thumb
  • nerve supply: radial
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12
Q

Extensor digiti minimi nerve supply

A
  • origin: lateral epicondyle
  • insertion: 5th distal phalanx
  • action: extend 5th digit
  • nerve supply: radial
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13
Q

Flexor digitorum profundus nerve supply

A
  • origin: anterior surface of ulna
  • insertion: distal phalanges of fingers 2-5
  • action: flex wrist and fingers 2-5
  • nerve supply: median (lateral portion) and ulnar (medial portion)
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14
Q

Extensor pollicis brevis insertion

A
  • origin: posterior surface of radius and ulna, interosseous membrane
  • insertion: proximal phalanx of thumb
  • action: extends thumb
  • nerve supply: radial
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15
Q

Extensor digitorum action

A
  • origin: lateral epicondyle
  • insertion: distal phalanges of fingers 2-5
  • action: extends wrist and fingers 2-5
  • nerve: radial
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16
Q

Flexor digitorum superficialis nerve supply

A
  • origin: medial epicondyle
  • insertion: middle phalanges of fingers 2-5
  • action: flex wrist and middle phalanges of fingers 2-5
  • nerve supply: median
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17
Q

Brachioradialis nerve supply

A
  • origin: lateral supracondylar ridge
  • insertion: styloid process of radius
  • action: flexes elbow
  • nerve supply: radial
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18
Q

Extensor carpi ulnaris origin

A
  • origin: lateral epicondyle
  • insertion: base of 5th metacarpal
  • action: extends and adducts wrist
  • nerve supply: radial
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19
Q

Extensor indicis nerve supply

A
  • origin: posterior surface of radius and ulna, interosseous membrane
  • insertion: tendon of extensor digitorum
  • action: extends 2nd digit
  • nerve supply: radial
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20
Q

Flexor digitorum profundus origin

A
  • origin: anterior surface of ulna
  • insertion: distal phalanges of fingers 2-5
  • action: flexes wrist and fingers 2-5
  • nerve supply: median and ulnar
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21
Q

Flexor carpi ulnaris insertion

A
  • origin: medial epicondyle
  • insertion: pisiform, hamate, 5th metacarpal
  • action: flexes and adducts wrist
  • nerve supply: ulnar
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22
Q

Extensor carpi ulnaris action

A
  • origin: lateral epicondyle
  • insertion: base of 5th metacarpal
  • action: extends and adducts wrist
  • nerve supply: radial
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23
Q

What portion of skin is innervated by the medial cutaneous nerve?

A

medial arm and forearm

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24
Q

Extensor carpi radialis longus nerve supply

A
  • origin: lateral epicondyle
  • insertion: base of 2nd metacarpal
  • action: extend and abduct wrist
  • nerve supply: radial
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25
Q

Palmaris longus insertion

A
  • origin: medial epicondyle
  • insertion: palmar aponeurosis
  • action: (weakly) flexes wrist
  • nerve supply: median
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26
Q

Pronator teres insertion

A
  • origin: medial epicondyle
  • insertion: midshaft of radius
  • action: pronates forearm
  • nerve supply: median
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27
Q

Abductor pollicis longus action

A
  • origin: posterior surface of radius and ulna, interosseous membrane
  • insertion: base of 1st metacarpal
  • action: abducts thumb
  • nerve supply: radial
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28
Q

Extensor carpi radialis brevis insertion

A
  • origin: lateral epicondyle
  • insertion: base of 3rd metacarpal
  • action: extends and abducts wrist
  • nerve supply: radial
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29
Q

Flexor pollicis longus origin

A
  • origin: anterior surface of radius
  • insertion: distal phalanx of thumb
  • action: flex thumb
  • nerve supply: median
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30
Q

Extensor pollicis longus insertion

A
  • origin: posterior surface of radius and ulna, interosseous membrane
  • insertion: distal phalanx of thumb
  • action: extends thumb
  • nerve supply: radial
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31
Q

Extensor digitorum nerve supply

A
  • origin: lateral epicondyle
  • insertion: distal phalanges of fingers 2-5
  • action: extends wrist and fingers 2-5
  • nerve supply: radial
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32
Q

Flexor digitorum superficialis origin

A
  • origin: medial epicondyle
  • insertion: middle phalanges of fingers 2-5
  • action: flex wrist and middle phalanges of fingers 2-5
  • nerve supply: median
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33
Q

Extensor digiti minimi action

A
  • origin: lateral epicondyle
  • insertion: 5th distal phalanx
  • action: extend 5th digit
  • nerve: radial
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34
Q

Name all muscles that supinate the forearm

A
  • biceps brachii
  • supinator
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35
Q

Pronator teres origin

A
  • origin: medial epicondyle
  • insertion: midshaft of radius
  • action: pronate forearm
  • nerve supply: median
36
Q

Flexor carpi ulnaris action

A
  • origin: medial epicondyle
  • insertion: pisiform, hamate, 5th metacarpal
  • action: flexes and adducts wrist
  • nerve supply: ulnar
37
Q

Flexor carpi radialis insertion

A
  • origin: medial epicondyle
  • insertion: 2nd and 3rd metacarpals
  • action: flexes and abducts wrist
  • nerve supply: median
38
Q

Extensor digiti minimi origin

A
  • origin: lateral epicondyle
  • insertion: 5th distal phalanx
  • action: extends 5th finger
  • nerve: radial
39
Q

Pronator teres nerve supply

A
  • origin: medial epicondyle
  • insertion: midshaft of radius
  • action: pronates forearm
  • nerve supply: median nerve
40
Q

Pronator teres action

A
  • origin: medial epicondyle
  • insertion: midshaft of radius
  • action: pronates forearm
  • nerve supply: median
41
Q

Pronator quadratus insertion

A
  • origin: anterior surface of distal ulna
  • insertion anterior surface of distal radius
  • action: pronates forearm
  • nerve: median
42
Q

Brachioradialis origin

A
  • origin: lateral supracondylar ridge
  • insertion: stuloid process of radius
  • action: flex elbow
  • nerve supply: radial
43
Q

Extensor carpi ulnaris nerve supply

A
  • origin: lateral epicondyle
  • insertion: base of 5th metacarpal
  • action: extends and adducts wrist
  • nerve supply: radial
44
Q

Supinator origin

A
  • origin: lateral epicondyle, proximal ulna
  • insertion: proximal end of radius
  • action: supinates forearm
  • nerve supply: radial
45
Q

Extensor digitorum origin

A
  • origin: lateral epicondyle
  • insertion: distal phalanges of fingers 2-5
  • action: extends wrist and fingers 2-5
  • nerve supply: radial
46
Q

Flexor carpi ulnaris nerve supply

A
  • origin: medial epicondyle
  • insertion: pisiform, hamate, 5th metacarpal
  • action: flexes and adducts the wrist
  • nerve supply: ulnar
47
Q

Name all the muscles that perform an action involving the thumb, specify which action is performed

A
  • Flex thumb:
    • flexor pollicis longus (ant forearm)
    • flexor pollicis brevis (thenar)
  • Extend thumb:
    • extensor pollicis longus (post forearm)
    • extensor pollicis brevis (post forearm)
  • Abduct thumb:
    • abductor pollicis longus (post forearm)
    • abductor pollicis brevis (thenar)
  • Adduct thumb:
    • adductor pollicis (thenar)
48
Q

What portion of skin is innervated by the radial nerve?

A

posterior arm and forearm, posteriolateral hand

49
Q

Extensor carpi radialis longus insertion

A
  • origin: lateral epicondyle
  • insertion: base of 2nd metacarpal
  • action: extends and abducts wrist
  • nerve: radial
50
Q

Brachioradialis action

A
  • origin: lateral supracondylar ridge
  • insertion: styloid process of radius
  • action: flex elbow
  • nerve supply: radial
51
Q

Extensor digitorum insertion

A
  • origin: lateral epicondyle
  • insertion: distal phalanges of fingers 2-5
  • action: extends wrist and fingers 2-5
  • nerve supply: radial
52
Q

Supinator action

A
  • origin: lateral epicondyle, proximal ulna
  • insertion: proximal end of radius
  • action: supinates forearm
  • nerve supply: radial
53
Q

Name all muscles that flex the wrist, and include any other actions perfomed by these muscles (if applicable)

A
  • Flexor carpi radialis also abducts the wrist
  • Palmaris longus has no other functions
  • Flexor digitorum superficialis also flexes middle phalanges 2-5
  • Flexor digitorum profundus also flexes fingers 2-5
  • Flexor carpi ulnaris also adducts the wrist
54
Q

Palmaris longus nerve supply

A
  • origin: medial epicondyle
  • insertion: palmar aponeurosis
  • action: (weakly) flexes wrist
  • nerve supply: median
55
Q

Extensor indicis origin

A
  • origin: posterior surface of radius and ulna, interosseous membrane
  • insertion: tendon of extensor digitorum
  • action: extend 2nd digit
  • nerve supply: radial
56
Q

Flexor pollicis longus nerve supply

A
  • origin: anterior surface of radius
  • insertion: distal phalanx of thumb
  • action: flex thumb
  • nerve supply: median
57
Q

Name all muscles that extend the wrist, include other functions of these muscles where applicable

A
  • Extensor carpi radialis longus also abducts the wrist
  • Extensor carpi radialis brevis also abducts the wrist
  • Extensor digitorum also extends digits 2-5
  • Extensor carpi ulnaris also adducts the wrist
58
Q

Extensor indicis action

A
  • origin: posterior surface of radius and ulna, interosseous membrane
  • insertion: tendon of extensor digitorum
  • action: extend 2nd digit (index finger)
  • nerve supply: radial
59
Q

Flexor carpi radialis origin

A
  • origin: medial epicondyle
  • insertion: 2nd and 3rd metacarpals
  • action: flexes and abducts wrist
  • nerve supply: median
60
Q

Flexor carpi ulnaris origin

A
  • origin: medial epicondyle
  • insertion: pisiform, hamate, 5th metacarpal
  • action: flexes and adducts the wrist
  • nerve supply: ulnar
61
Q

Abductor pollicis longus insertion

A
  • origin: posterior surface of radius and ulna, interosseous membrane
  • insertion: base of 1st metacarpal
  • action: abduct thumb
  • nerve supply: radial
62
Q

Brachioradialis insertion

A
  • origin: lateral supracondylar ridge
  • insertion: styloid process of radius
  • action: flexes elbow
  • nerve supply: radial
63
Q

Flexor carpi radialis nerve supply

A
  • origin: medial epicondyle
  • insertion: 2nd and 3rd metacarpals
  • action: flexes and abducts wrist
  • nerve supply: median
64
Q

Flexor digitorum superficialis insertion

A
  • origin: medial epicondyle
  • insertion: middle phalanges of fingers 2-5
  • action: flexes wrist and middle phalanges of fingers 2-5
  • nerve supply: median
65
Q

Extensor pollicis brevis nerve supply

A
  • origin: posterior surface of radius and ulna, interosseous membrane
  • insertion: proximal phalanx of thumb
  • action: extends thumb
  • nerve supply: radial
66
Q

Extensor carpi radialis brevis action

A
  • origin: lateral epicondyle
  • insertion: base of 3rd metacarpal
  • action: extends and abducts wrist
  • nerve supply: radial
67
Q

Extensor digiti minimi insertion

A
  • origin: lateral epicondyle
  • insertion: 5th distal phalanx
  • action: extends 5th digit
  • nerve: radial
68
Q

Extensor pollicis longus origin

A
  • origin: posterior surface of radius and ulna, interosseous membrane
  • insertion: distal phalanx of thumb
  • action: extends thumb
  • nerve supply: radial
69
Q

Extensor pollicis brevis action

A
  • origin: posterior surface of radius and ulna, interosseous membrane
  • insertion: proximal phalanx of thumb
  • action: extends thumb
  • nerve supply: radial
70
Q

What portion of skin is innervated by the ulnar nerve?

A

pinky finger, medial 1/2 of ring finger, medial 1/3 of hand

71
Q

What portion of skin is innervated by the median nerve?

A

Lateral 2/3 of palm, lateral 1/2 of ring finger, thumb, index finger, middle finger

72
Q

Palmaris longus origin

A
  • origin: medial epicondyle
  • insertion: palmar aponeurosis
  • action: (weakly) flexes wrist
  • nerve supply: median
73
Q

Flexor digitorum profundus insertion

A
  • origin: anterior surface of ulna
  • insertion: distal phalanges of fingers 2-5
  • action: flexes wrist and fingers 2-5
  • nerve supply: median and ulnar
74
Q

Abductor pollicis longus nerve supply

A
  • origin: posterior surface of radius and ulna, interosseous membrane
  • insertion: base of 1st metacarpal
  • action: abducts thumb
  • nerve supply: radial
75
Q

Extensor carpi radialis brevis nerve supply

A
  • origin: lateral epicondyle
  • insertion: base of 3rd metacarpal
  • action: extends and abducts wrist
  • nerve supply: radial
76
Q

Flexor carpi radialis action

A
  • origin: medial epicondyle
  • insertion: 2nd and 3rd metacarpals
  • action: flex and abduct wrist
  • nerve supply: median
77
Q

Extensor carpi radialis longus origin

A
  • origin: lateral epicondyle
  • insertion: base of 2nd metacarpal
  • action: flexes and abducts wrist
  • nerve supply: radial
78
Q

Extensor carpi radialis longus action

A
  • origin: lateral epicondyle
  • insertion: base of 2nd metacarpal
  • action: extends and abducts wrist
  • nerve supply: radial
79
Q

Extensor indicis insertion

A
  • origin: posterior surface of radius and ulna, interosseous membrane
  • insertion: tendon of extensor digitorum
  • action: extend 2nd digit
  • nerve supply: radial
80
Q

Pronator quadratus nerve supply

A
  • origin: anterior surface of distal ulna
  • insertion: anterior surface of distal radius
  • action: pronates forearm
  • nerve supply: median
81
Q

Extensor carpi radialis brevis origin

A
  • origin: lateral epicondyle
  • insertion: base of 3rd metacarpal
  • action: extend and abduct wrist
  • nerve supply: radial
82
Q

Supinator nerve supply

A
  • origin: lateral epicondyle, proximal ulna
  • insertion: proximal end of radius
  • action: supinates forearm
  • nerve supply: radial
83
Q

Abductor pollicis longus origin

A
  • origin: posterior surface of radius and ulna, interosseous membrane
  • insertion: base of 1st metacarpal
  • action: abducts thumb
  • nerve supply: radial
84
Q

Flexor pollicis longus insertion

A
  • origin: anterior surface of radius
  • insertion: distal phalanx of thumb
  • action: flex thumb
  • nerve supply: median
85
Q

Extensor pollicis longus nerve supply

A
  • origin: posterior surface of radius and ulna, interosseous membrane
  • insertion: distal phalanx of thumb
  • action: extends thumb
  • nerve supply: radial
86
Q

What portion of skin is innervated by the axillary nerve?

A

lateral shoulder

87
Q

Pronator quadratus action

A
  • origin: anterior surface of distal ulna
  • insertion: anterior surface of distal radius
  • action: pronates forearm
  • nerve supply: median

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