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Anatomy Lecture Exam 2 > PPT 12 > Flashcards

PPT 12 Flashcards

1
Q

flexor digitorum superficialis (FDS) action

A

of digits 2-5…
proximal phalanx flexion @MCP joint
middle phalanx flexion @PIP joint

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1
Q

extrinsic flexor muscles

A

superficial:
flexor carpi radialis
palmaris longus
flexor carpi ulnaris
intermediate:
flexor digitorum superficialis
deep:
flexor digitorum profundus
flexor pollicis longus
pronator quadratus

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2
Q

flexor digitorum superficialis (FDS) PA

A

humero-ulnar head: medial epicondyle, coronoid process of ulna
radial head: anterior radius

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3
Q

flexor digitorum superficialis (FDS) DA

A

shafts of middle phalanges of digits 2-5

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4
Q

flexor digitorum superficialis (FDS) nerve innervation

A

median nerve C7, C8, T1

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5
Q

flexor digitorum pronfundus (FDP) action

A

digits 2-5 flexion @ MCP, PIP, and DIP joints
assists with wrist flexion

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6
Q

flexor digitorum pronfundus (FDP) PA

A

proximal ulna
interosseous membrane

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7
Q

flexor digitorum pronfundus (FDP) DA

A

medial part: bases of distal phalanges of digits 4-5
lateral part: bases of distal phalanges of digits 2-3

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8
Q

flexor digitorum pronfundus (FDP) nerve innervation

A

medial part: ulnar nerve C8, T1
lateral part: median nerve (AIN) C8, T1

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9
Q

flexor pollicis longus action

A

flexes phalanges of thumb

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10
Q

flexor pollicis longus PA

A

anterior radius and adjacent interosseous membrane

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11
Q

flexor pollicis longus DA

A

base of distal phalanx of thumb

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12
Q

flexor pollicis longus nerve innervation

A

median nerve (AIN) C8, T1

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13
Q

thenar muscles

A

flexor pollicis brevis
abductor pollicis brevis
opponens pollicis

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14
Q

flexor pollicis brevis action

A

thumb flexion @ CMC and MCP joints
assists with thumb opposition

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15
Q

flexor pollicis brevis PA

A

flexor retinaculum
tubercules of scaphoid and trapezium

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16
Q

flexor pollicis brevis DA

A

base of proximal phalanx of thumb

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17
Q

flexor pollicis brevis nerve innervation

A

superficial head: median nerve (recurrent branch) C8, T1
deep head: ulna nerve (deep branch) C8, T1

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18
Q

abductor pollicis brevis action

A

thumb abduction @ CMC and MCP joints
assists with thumb opposition

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19
Q

abductor pollicis brevis PA

A

flexor retinaculum
tubercules of scaphoid and trapezium

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20
Q

abductor pollicis brevis DA

A

base of proximal phalanx of thumb

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21
Q

abductor pollicis brevis nerve innervation

A

median nerve (recurrent branch) C8, T1

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22
Q

opponens pollicis action

A

thumb opposition (draws 1st metacarpal to center of palm and medially rotates it)

23
Q

opponens pollicis PA

A

flexor retinaculum
tubercules of scaphoid and trapezium

24
Q

opponens pollicis DA

A

1st metacarpal

25
Q

opponens pollicis nerve innervation

A

median nerve (recurrent branch) C8, T1

26
Q

hypothenar muscles

A

flexor digiti minimi
abductor digiti minimi
opponens digiti minimi

27
Q

flexor digiti minimi action

A

5th digit proximal phalanx flexion @ MCP joint

28
Q

flexor digiti minimi PA

A

hook of hamate
flexor retinaculum

29
Q

flexor digiti minimi DA

A

base of 5th proximal phalanx

30
Q

flexor digiti minimi nerve innervation

A

ulnar nerve (deep branch) C8, T1

31
Q

abductor digiti minimi action

A

5th digit abduction @MCP joint

32
Q

abductor digiti minimi PA

A

pisiform

33
Q

abductor digiti minimi DA

A

base of 5th proximal phalanx

34
Q

abductor digiti minimi nerve innervation

A

ulnar nerve (deep branch) C8, T1

35
Q

opponens digiti minimi action

A

5th digit opposition @CMC joint

36
Q

opponens digiti minimi PA

A

hook of hamate
flexor retinaculum

37
Q

opponens digiti minimi DA

A

medial border of 5th metacarpal

38
Q

opponens digiti minimi nerve innervation

A

ulnar nerve (deep branch) C8, T1

39
Q

adductor pollicis action

A

thumb adduction towards lateral border of palm

40
Q

adductor pollicis PA

A

oblique head:
bases of 2nd and 3rd metacarpals
capitate
adjacent carpal bones
transverse head:
shaft of 3rd metacarpal

41
Q

adductor pollicis DA

A

base of proximal phalanx of thumb

42
Q

adductor pollicis nerve innervation

A

ulnar nerve (deep branch) C8, T1

43
Q

lumbricals of the hand action

A

of digits 2-5…
flexion @MCP joints
extension @IP joints

44
Q

lumbricals of the hand PA

A

1 & 2: lateral two tendons of FDP (unipennate)
3 & 4: medial three tendons of FDP (bipennate)

45
Q

lumbricals of the hand DA

A

radial sides of extensor expansions of digits 2-5

46
Q

lumbricals of the hand nerve innervation

A

1 & 2: median nerve (digital branch) C8, T1
3 & 4: ulnar nerve (deep branch) C8, T1

47
Q

palmar interossei action

A

digits 2, 4, 5 adduction towards axial line
assists lumbricals with…
flexion @MCP joints
extension @IP joints

48
Q

palmar interossei PA

A

palmar surfaces of 2nd, 4th, and 5th metacarpals (unipennate)

49
Q

palmar interossei DA

A

of digits 2, 4, 5…
bases of proximal phalanges
extensor expansions

50
Q

palmar interossei nerve innervation

A

ulnar nerve (deep branch) C8, T1

51
Q

dorsal interossei action

A

digits 2-4 abduction from axial line
assists lumbricals with…
flexion @MCP joints
extension @IP joints

52
Q

dorsal interossei PA

A

adjacent sides of two metacarpals (bipennate)

53
Q

dorsal interossei DA

A

of digits 2-4…
bases of proximal phalanges
extensor expansions

54
Q

dorsal interossei nerve innervation

A

ulnar nerve (deep branch) C8, T1

Anatomy Lecture Exam 2 (4 decks)

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