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Functional Anatomy > Wrist (3B/4A) > Flashcards

Wrist (3B/4A) Flashcards

1
Q

Attachments of flexor carpi radialis (FCR)

A
  • proximal = common flexor tendon at medial epicondyle
  • distal = base of 2nd and 3rd metacarpals
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2
Q

Innervation of flexor carpi radialis (FCR)

A

Median nerve

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3
Q

Actions of flexor carpi radialis (FCR)

A
  • flex the wrist (radiocarpal joint)
  • radially deviate the wrist (radiocarpal joint)
  • may assist to flex the elbow (humeroulnar joint)
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4
Q

Attachments of flexor carpi ulnaris (FCU)

A
  • proximal = common flexor tendon at medial epicondyle (proximal-medial ulna)
  • distal = pisiform, hook of hamate, base of 5th metacarpal
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5
Q

Innervation of flexor carpi ulnaris (FCU)

A

Ulnar nerve

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6
Q

Actions of flexor carpi ulnaris (FCU)

A
  • flex the wrist (radiocarpal joint)
  • ulnarly deviate the wrist (radiocarpal joint)
  • assist to flex the elbow (humeroulnar joint)
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7
Q

Attachments of palmaris longus

A
  • proximal = common flexor tendon at medial epicondyle
  • distal = flexor retinaculum and palmar aponeurosis
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8
Q

Innervation of palmaris longus

A

Median nerve

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9
Q

Actions of palmaris longus

A
  • tense the palmar fascia
  • flex the wrist (radiocarpal joint)
  • may assist to flex the elbow (humeroulnar joint)
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10
Q

Attachments of flexor digitorum superficialis (FDS)

A
  • proximal = common flexor tendon at medial epicondyle
  • distal = middle phalanx of 2nd-5th digits
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11
Q

Innervation of flexor digitorum superficialis (FDS)

A

Median nerve

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12
Q

Actions of flexor digitorum superficialis (FDS)

A
  • flex 2nd-5th fingers (MCP and PIP joints)
  • flex the wrist (radiocarpal joint)
    the only muscle that can independently flex the PIP joints of the digits
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13
Q

Attachments of flexor digitorum profundus (FDP)

A
  • proximal = anterior ulna
  • distal = distal phalanx of 2nd-5th digits
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14
Q

Innervation of flexor digitorum profundus (FDP)

A
  • 2nd, 3rd digits = median nerve
  • 4th, 5th digits = ulnar nerve
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15
Q

Actions of flexor digitorum profundus (FDP)

A
  • flex 2nd-5th fingers (MCP and DIP joints)
  • assist to flex the wrist (radiocarpal joint)
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16
Q

Attachments of flexor pollicis longus (FPL)

A
  • proximal = anterior radius and interosseus membrane
  • distal = distal phalanx of thumb
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17
Q

Innervation of flexor pollicis longus (FPL)

A

Median nerve

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18
Q

Actions of flexor pollicis longus (FPL)

A
  • flex the thumb (IP joint)
  • flex the thumb (MCP and CMC joints)
  • assist to flex the wrist (radiocarpal joint)
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19
Q

Attachments of extensor carpi radialis longus (ECRL)

A
  • proximal = lateral, distal humerus
  • distal = base of 2nd metacarpal
20
Q

Innervation of extensor carpi radialis longus (ECRL)

A

Radial nerve

21
Q

Actions of extensor carpi radialis longus (ECRL)

A
  • extend the wrist (radiocarpal joint)
  • radially deviate the wrist (radiocarpal joint)
  • assist to flex the elbow (humeroulnar joint)
22
Q

Attachments of extensor carpi radialis brevis (ECRB)

A
  • proximal = common extensor tendon from lateral epicondyle
  • distal = base of 3rd metacarpal
23
Q

Innervation of extensor carpi radialis brevis (ECRB)

A

Radial nerve

24
Q

Actions of extensor carpi radialis brevis (ECRB)

A
  • extend the wrist (radiocarpal joint)
  • radially deviate the wrist (radiocarpal joint)
  • assist to flex the elbow (humeroulnar joint)
25
Q

Attachments of extensor carpi ulnaris (ECU)

A
  • proximal = common extensor tendon from lateral epicondyle
  • distal = base of 5th metacarpal
26
Q

Innervation of extensor carpi ulnaris (ECU)

A

Radial nerve

27
Q

Actions of extensor carpi ulnaris (ECU)

A
  • extend the wrist (radiocarpal joint)
  • ulnarly deviate the wrist (radiocarpal joint)
28
Q

Attachments of extensor digitorum (ED)

A
  • proximal = common extensor tendon from lateral epicondyle
  • distal = extensor mechanism of digits 2-5 - “middle and distal phalanx”
29
Q

Innervation of extensor digitorum (ED)

A

Radial nerve

30
Q

Actions of extensor digitorum (ED)

A
  • extend 2nd-5th fingers (MCP and IP joints)
  • assist to extend the wrist (radiocarpal joint)
31
Q

Attachments of abductor pollicis longus

A
  • proximal = posterior radius and ulna, interosseus membrane
  • distal = base of 1st metacarpal
32
Q

Innervation of abductor pollicis longus

A

Radial nerve

33
Q

Actions of abductor pollicis longus

A
  • radially abduct the thumb
  • extend the thumb
  • radially deviate the wrist
34
Q

Attachments of extensor pollicis brevis

A
  • proximal = posterior radius and interosseus membrane
  • distal = base of 1st proximal phalanx
35
Q

Innervation of extensor pollicis brevis

A

Radial nerve

36
Q

Actions of extensor pollicis brevis

A
  • extend the thumb (IP, MCP, CMC)
  • radially deviate the wrist
37
Q

Attachments of extensor pollicis longus

A
  • proximal = posterior ulna and interosseus membrane
  • distal = base of 1st distal phalanx
38
Q

Innervation of extensor pollicis longus

A

Radial nerve

39
Q

Actions of extensor pollicis longus

A
  • extend the thumb (IP, MCP, CMC)
  • radially deviate the wrist
40
Q

Attachments of extensor indicis

A
  • proximal = distal posterior ulna and interosseus membrane
  • distal = extensor mechanism of 2nd digit (index finger)
41
Q

Innervation of extensor indicis

A

Radial nerve

42
Q

Actions of extensor indicis

A
  • extend 2nd finger (MCP)
  • adduction 2nd finger
  • extend the wrist (assist)
43
Q

Attachments of extensor digiti minimi

A
  • proximal = lateral epicondyle (common extensor tendon)
  • distal = extensor mechanism of 5th digit
44
Q

Innervation of extensor digiti minimi

A

Radial nerve

45
Q

Actions of extensor digiti minimi

A
  • extend the wrist
  • extend digits 2-5 (MCP)

Functional Anatomy (8 decks)

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