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Anatomy > Hand muscles - Thenar, Hypothenar, Digits 2-4 > Flashcards

Hand muscles - Thenar, Hypothenar, Digits 2-4 Flashcards

1
Q

flexor pollicis brevis origin

A

flexor rentiaculum, scaphoid, trapezium

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2
Q

flexor pollicis brevis insertion

A

lateral side of proximal phalanx of digit 1

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3
Q

flexor pollicis brevis nerve

A

recurrent median nerve

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4
Q

flexor pollicis brevis bs

A

radial

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5
Q

flexor pollicis brevis action

A

flexion of first digit

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6
Q

abductor pollicis brevis origin

A

flexor rentiaculum, scaphoid, trapezium

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7
Q

abductor pollicis brevis insertion

A

lateral side of proximal phalanx of digit 1

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8
Q

abductor pollicis brevis nerve

A

recurrent median nerve

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9
Q

abductor pollicis brevis bs

A

radial

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10
Q

abductor pollicis brevis action

A

abduction of first digit, aids in opposition of first digit

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11
Q

adductor pollicis origin

A

oblique head: base of 2nd and 3rd metacarpal, capitate

transverse head: shaft of 3rd metacarpal

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12
Q

adductor pollicis insertion

A

medial side of proximal phalanx of first digit

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13
Q

adductor pollicis nerve

A

deep ulnar nerve

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14
Q

adductor pollicis bs

A

deep palmar arch

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15
Q

adductor pollicis action

A

adduction of first digit

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16
Q

opponens pollicis origin

A

flexor retinaculum, scaphoid, trapezium

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17
Q

opponens pollicis insertion

A

lateral side of 1st metacarpal

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18
Q

opponens pollicis nerve

A

recurrent median nerve

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19
Q

opponens pollicis bs

A

radial artery

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20
Q

opponens pollicis actions

A

draws 1st metacarpal towards the center of the palm and medially rotates

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21
Q

flexor digiti minimi brevis origin

A

hook and hamate, flexor retinaculum

22
Q

flexor digiti minimi brevis insertion

A

medial side of proximal phalanx of 5th digit

23
Q

flexor digiti minimi brevis nerve

A

deep ulnar nerve

24
Q

flexor digiti minimi brevis bs

A

ulnar artery

25
Q

flexor digiti minimi brevis action

A

flexion of proximal phalanx for 5th digit

26
Q

abductor digiti minimi origin

A

pisiform

27
Q

abductor digiti minimi insertion

A

medial side of proximal phalanx of 5th digit

28
Q

abductor digiti minimi nerve

A

deep ulnar nerve

29
Q

abductor digiti minimi bs

A

ulnar artery

30
Q

abductor digiti minimi action

A

abduction of 5th digit, assist in flexion of 5th digit

31
Q

opponens digiti minimi origin

A

hook of hamate, flexor retinaculum

32
Q

opponens digiti minimi insertion

A

medial border of 5th metacarpal

33
Q

opponens digiti minimi nerve

A

deep ulnar nerve

34
Q

opponens digiti minimi bs

A

ulnar artery

35
Q

opponens digiti minimi action

A

draws 5th metacarpal anterior and rotates it

36
Q

palmar interossei origin

A

palmar surface of 2, 4, 5, metacarpals

37
Q

palmar interossei insertion

A

bases of proximal phalanges and extensor expansion of digits 2.4.5

38
Q

palmar interossei nerve

A

deep ulnar nerve

39
Q

palmar interossei bs

A

palmar metacarpal arteries

40
Q

palmar interossei action

A

adduction of digits 2,4,5

assist in flexion at MP joints

extension and IP joints

41
Q

dorsal interossei origin

A

adjacent sides of two metacarpals

42
Q

dorsal interossei insertion

A

bases of proximal phalanges

extensor expansion of 2-4th digit

43
Q

dorsal interossei nerve

A

deep ulnar

44
Q

dorsal interossei bs

A

dorsal and palmar metacarpal arteries

45
Q

dorsal interossei action

A

abduction of digits 2-4

flexion at MCP

extension at IP joints

46
Q

lumbricals origin

A

1 and 2 - lateral two tendons of flexor digitorum profundus

3 and 4 - medial three tendons of flexor digitorum profundus

47
Q

lumbricals insertion

A

lateral sides of extensor expansion of digits 2 to 5

48
Q

lumbricals nerve

A

1 and 2 - median nerve

3 and 4 - ulnar nerve

49
Q

lumbricals bs

A
  • superficial palmar arch
  • common palmar digital arteries
  • deep palmar arch
  • dorsal digital artery
50
Q

lumbricals action

A

flexion at MCP joints

extension at IP digits 2-5

Anatomy (22 decks)

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