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Intro to Anatomy > Forearm muscles OIAN > Flashcards

Forearm muscles OIAN Flashcards

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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
Palmaris longus insertion
* origin: medial epicondyle * **insertion:** **palmar aponeurosis** * action: (weakly) flexes wrist * nerve supply: median
26
Pronator teres insertion
* origin: medial epicondyle * **insertion: midshaft of radius** * action: pronates forearm * nerve supply: median
27
Abductor pollicis longus action
* origin: posterior surface of radius and ulna, interosseous membrane * insertion: base of 1st metacarpal * **action: abducts thumb** * nerve supply: radial
28
Extensor carpi radialis brevis insertion
* origin: lateral epicondyle * **insertion: base of 3rd metacarpal** * action: extends and abducts wrist * nerve supply: radial
29
Flexor pollicis longus origin
* **origin: anterior surface of radius** * insertion: distal phalanx of thumb * action: flex thumb * nerve supply: median
30
Extensor pollicis longus insertion
* origin: posterior surface of radius and ulna, interosseous membrane * **insertion: distal phalanx of thumb** * action: extends thumb * nerve supply: radial
31
Extensor digitorum nerve supply
* origin: lateral epicondyle * insertion: distal phalanges of fingers 2-5 * action: extends wrist and fingers 2-5 * **nerve supply: radial**
32
Flexor digitorum superficialis origin
* **origin: medial epicondyle** * insertion: middle phalanges of fingers 2-5 * action: flex wrist and middle phalanges of fingers 2-5 * nerve supply: median
33
Extensor digiti minimi action
* origin: lateral epicondyle * insertion: 5th distal phalanx * **action: extend 5th digit** * nerve: radial
34
Name all muscles that supinate the forearm
* biceps brachii * supinator
35
Pronator teres origin
* **origin:** **medial epicondyle** * insertion: midshaft of radius * action: pronate forearm * nerve supply: median
36
Flexor carpi ulnaris action
* origin: medial epicondyle * insertion: pisiform, hamate, 5th metacarpal * **action: flexes and adducts wrist** * nerve supply: ulnar
37
Flexor carpi radialis insertion
* origin: medial epicondyle * **insertion: 2nd and 3rd metacarpals** * action: flexes and abducts wrist * nerve supply: median
38
Extensor digiti minimi origin
* **origin: lateral epicondyle** * insertion: 5th distal phalanx * action: extends 5th finger * nerve: radial
39
Pronator teres nerve supply
* origin: medial epicondyle * insertion: midshaft of radius * action: pronates forearm * **nerve supply: median nerve**
40
Pronator teres action
* origin: medial epicondyle * insertion: midshaft of radius * **action: pronates forearm** * nerve supply: median
41
Pronator quadratus insertion
* origin: anterior surface of distal ulna * **insertion anterior surface of distal radius** * action: pronates forearm * nerve: median
42
Brachioradialis origin
* **origin: lateral supracondylar ridge** * insertion: stuloid process of radius * action: flex elbow * nerve supply: radial
43
Extensor carpi ulnaris nerve supply
* origin: lateral epicondyle * insertion: base of 5th metacarpal * action: extends and adducts wrist * **nerve supply: radial**
44
Supinator origin
* **origin: lateral epicondyle, proximal ulna** * insertion: proximal end of radius * action: supinates forearm * nerve supply: radial
45
Extensor digitorum origin
* **origin: lateral epicondyle** * insertion: distal phalanges of fingers 2-5 * action: extends wrist and fingers 2-5 * nerve supply: radial
46
Flexor carpi ulnaris nerve supply
* origin: medial epicondyle * insertion: pisiform, hamate, 5th metacarpal * action: flexes and adducts the wrist * **nerve supply: ulnar**
47
Name all the muscles that perform an action involving the thumb, specify which action is performed
* 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
What portion of skin is innervated by the radial nerve?
posterior arm and forearm, posteriolateral hand
49
Extensor carpi radialis longus insertion
* origin: lateral epicondyle * **insertion: base of 2nd metacarpal** * action: extends and abducts wrist * nerve: radial
50
Brachioradialis action
* origin: lateral supracondylar ridge * insertion: styloid process of radius * **action: flex elbow** * nerve supply: radial
51
Extensor digitorum insertion
* origin: lateral epicondyle * **insertion: distal phalanges of fingers 2-5** * action: extends wrist and fingers 2-5 * nerve supply: radial
52
Supinator action
* origin: lateral epicondyle, proximal ulna * insertion: proximal end of radius * **action: supinates forearm** * nerve supply: radial
53
Name all muscles that flex the wrist, and include any other actions perfomed by these muscles (if applicable)
* **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
Palmaris longus nerve supply
* origin: medial epicondyle * insertion: palmar aponeurosis * action: (weakly) flexes wrist * **nerve supply: median**
55
Extensor indicis origin
* **origin: posterior surface of radius and ulna, interosseous membrane** * insertion: tendon of extensor digitorum * action: extend 2nd digit * nerve supply: radial
56
Flexor pollicis longus nerve supply
* origin: anterior surface of radius * insertion: distal phalanx of thumb * action: flex thumb * **nerve supply: median**
57
Name all muscles that extend the wrist, include other functions of these muscles where applicable
* **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
Extensor indicis action
* origin: posterior surface of radius and ulna, interosseous membrane * insertion: tendon of extensor digitorum * **action: extend 2nd digit (index finger)** * nerve supply: radial
59
Flexor carpi radialis origin
* **origin: medial epicondyle** * insertion: 2nd and 3rd metacarpals * action: flexes and abducts wrist * nerve supply: median
60
Flexor carpi ulnaris origin
* **origin: medial epicondyle** * insertion: pisiform, hamate, 5th metacarpal * action: flexes and adducts the wrist * nerve supply: ulnar
61
Abductor pollicis longus insertion
* origin: posterior surface of radius and ulna, interosseous membrane * **insertion: base of 1st metacarpal** * action: abduct thumb * nerve supply: radial
62
Brachioradialis insertion
* origin: lateral supracondylar ridge * **insertion:** **styloid process of radius** * action: flexes elbow * nerve supply: radial
63
Flexor carpi radialis nerve supply
* origin: medial epicondyle * insertion: 2nd and 3rd metacarpals * action: flexes and abducts wrist * **nerve supply: median**
64
Flexor digitorum superficialis insertion
* origin: medial epicondyle * **insertion: middle phalanges of fingers 2-5** * action: flexes wrist and middle phalanges of fingers 2-5 * nerve supply: median
65
Extensor pollicis brevis nerve supply
* origin: posterior surface of radius and ulna, interosseous membrane * insertion: proximal phalanx of thumb * action: extends thumb * **nerve supply: radial**
66
Extensor carpi radialis brevis action
* origin: lateral epicondyle * insertion: base of 3rd metacarpal * **action: extends and abducts wrist** * nerve supply: radial
67
Extensor digiti minimi insertion
* origin: lateral epicondyle * **insertion: 5th distal phalanx** * action: extends 5th digit * nerve: radial
68
Extensor pollicis longus origin
* **origin: posterior surface of radius and ulna, interosseous membrane** * insertion: distal phalanx of thumb * action: extends thumb * nerve supply: radial
69
Extensor pollicis brevis action
* origin: posterior surface of radius and ulna, interosseous membrane * insertion: proximal phalanx of thumb * **action: extends thumb** * nerve supply: radial
70
What portion of skin is innervated by the ulnar nerve?
pinky finger, medial 1/2 of ring finger, medial 1/3 of hand
71
What portion of skin is innervated by the median nerve?
Lateral 2/3 of palm, lateral 1/2 of ring finger, thumb, index finger, middle finger
72
Palmaris longus origin
* **origin: medial epicondyle** * insertion: palmar aponeurosis * action: (weakly) flexes wrist * nerve supply: median
73
Flexor digitorum profundus insertion
* 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
Abductor pollicis longus nerve supply
* origin: posterior surface of radius and ulna, interosseous membrane * insertion: base of 1st metacarpal * action: abducts thumb * **nerve supply: radial**
75
Extensor carpi radialis brevis nerve supply
* origin: lateral epicondyle * insertion: base of 3rd metacarpal * action: extends and abducts wrist * nerve supply: radial
76
Flexor carpi radialis action
* origin: medial epicondyle * insertion: 2nd and 3rd metacarpals * **action: flex and abduct wrist** * nerve supply: median
77
Extensor carpi radialis longus origin
* **origin: lateral epicondyle** * insertion: base of 2nd metacarpal * action: flexes and abducts wrist * nerve supply: radial
78
Extensor carpi radialis longus action
* origin: lateral epicondyle * insertion: base of 2nd metacarpal * **action: extends and abducts wrist** * nerve supply: radial
79
Extensor indicis insertion
* origin: posterior surface of radius and ulna, interosseous membrane * **insertion: tendon of extensor digitorum** * action: extend 2nd digit * nerve supply: radial
80
Pronator quadratus nerve supply
* origin: anterior surface of distal ulna * insertion: anterior surface of distal radius * action: pronates forearm * **nerve supply: median**
81
Extensor carpi radialis brevis origin
* **origin: lateral epicondyle** * insertion: base of 3rd metacarpal * action: extend and abduct wrist * nerve supply: radial
82
Supinator nerve supply
* origin: lateral epicondyle, proximal ulna * insertion: proximal end of radius * action: supinates forearm * **nerve supply: radial**
83
Abductor pollicis longus origin
* **origin: posterior surface of radius and ulna, interosseous membrane** * insertion: base of 1st metacarpal * action: abducts thumb * nerve supply: radial
84
Flexor pollicis longus insertion
* origin: anterior surface of radius * **insertion: distal phalanx of thumb** * action: flex thumb * nerve supply: median
85
Extensor pollicis longus nerve supply
* origin: posterior surface of radius and ulna, interosseous membrane * insertion: distal phalanx of thumb * action: extends thumb * **nerve supply: radial**
86
What portion of skin is innervated by the axillary nerve?
lateral shoulder
87
Pronator quadratus action
* origin: anterior surface of distal ulna * insertion: anterior surface of distal radius * **action: pronates forearm** * nerve supply: median

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