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Anatomy > Wrist and Hand (chart) > Flashcards

Wrist and Hand (chart) Flashcards

1
Q

what is the proximal origin of the abductor pollicis brevis?

A

superficial flexor retinaculum and bones of scaphoid and trapezium bone.

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2
Q

what is the distal insertion of the flexor policies braves and abductor pollicis brevis?

A

lateral base of proximal phalanx of thumb

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3
Q

what is the action of the abductor policies brevis?

A

abducts and assists in opposition of thumb

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4
Q

what muscles innervate on the median nerve?

A
  • abductor pollicis brevis
  • flexor pollicis brevis
  • opponens pollicis
  • lumbricais is 1 and 2
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5
Q

what is the proximal origin of the opponens pollicis and flexor pollicis brevis?

A

flexor retinaculum and tubercle of trapezium bone

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6
Q

what is the action of the flexor pollicis brevis?

A

flexes proximal phalanx of thumb

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7
Q

what is the distal insertion of the opponens pollicis?

A

lateral side of 1st metacarpal

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8
Q

what is the action of the opponens pollicis?

A

draws 1st metacarpal forward and rotates it medially

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9
Q

what muscles innervate at the ulnar nerve?

A
  • adductor pollicis
  • abductor digiti minimi (hand)
  • flexor digiti minimi brevis (hand)
  • opponens digiti minimi
  • lumbricais is 3 and 4
  • dorsal interosseous muscles
  • palmer intersseous muscles
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10
Q

what is the proximal origin of the adductor pollicis; oblique head?

A

bases of 2nd and 3rd metacarpal bones capitate bone and adjacent bones

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11
Q

what is the proximal origin of the adductor pollicis; transverse head?

A

anterior surface of 3rd metacarpal

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12
Q

what is the distal insertion of the adductor pollicis?

A

medial side of base of proximal phalanx of thumb

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13
Q

what is the action of the adductor policis?

A

adducts thumb

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14
Q

what is the proximal origin of the palmaris brevis?

A

palmer aponeurosis and flexor retinaculum

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15
Q

what is the distal insertion of the palmaris brevis?

A

skin of medial border of palm.

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16
Q

what is the innervation of the palmaris brevis?

A

superficial palmer branch of ulnar nerve

17
Q

what is the action of the palmaris bravis?

A

deepens hollow of hand, assists grip

18
Q

what is the proximal origin of the abductor digiti minimi (hand)?

A

pisiform bone, tendon of flexor carpi ulnaris

19
Q

what is the distal insertion of the flexor digiti minimi and abductor digiti minimi (hand)?

A

medial side of base of proximal phalanx of little finger (5th digit)

20
Q

what is the action of the abductor digiti minimi (hand)?

A

abducts the little finger (5th digit)

21
Q

what is the proximal origin of the opponens digiti minimi and flexor digiti minimi brevis (hand)?

A

flexor retinaculum and hook of hamate bone

22
Q

what is the action of the flexor digiti minimi brevis (hand)?

A

flexes proximal phalanx of the little finger

23
Q

what is the distal insertion of the opponens digiti minimi?

A

palmer surface of 5th metacarpal

24
Q

what is the action of the opponens digiti minimi?

A

draws 5th metacarpal anteriorly and rotates it to face thumb

25
Q

what is the proximal origin of lumbricais 1 and 2?

A

lateral two tendons of flexor digitorum profundus

26
Q

what is the distal insertion of the lumbricais 1 and 2?

A

lateral sides of extensor expansion on of digits 2 and 3

27
Q

what is the action of the lumbricais 1, 2, 3, 4?

A

extends digits at interphalangeal joints and flexes metacarpapophalangeal joints

28
Q

what is the proximal origin of lumbricais 3 and 4?

A

medial three tendons of flexor digitorum profundus

29
Q

what is the distal insertion of the lumbricais 3 and 4?

A

lateral sides of extensor expansion on of digits 4 and 5

30
Q

what is the proximal origin of the dorsal interosseous muscles?

A

adjacent sides of two metacarpal bones

31
Q

what is the distal insertion of the dorsal interosseous muscles?

A

base of proximal phalanges, and extensor expansion of digits 2-4

32
Q

what is the action of the dorsal interosseous muscles?

A

abducts digits from axial line of hand (3rd digit); flex digits at metacarpophalangeal joint and extend interphalangeal joints

33
Q

what is the proximal origin of the palmar interosseous muscles?

A

side of metacarpals 2,4, and 5

34
Q

what is the distal insertion of the palmar interosseous muscles?

A

bases of proximal phalanges, and extensor expansion of digits 2,4,5

35
Q

what is the action of the palmar interosseous muscles?

A

adducts digits toward axial line of hand (3rd digit); flexes digits at metacarpophalangeal joint and extends interphalangeal joints

Anatomy (11 decks)

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