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Muscles > Hand > Flashcards

Hand Flashcards

1
Q

Flexor Pollicis Brevis Origin

A

Superficial Head: Flexor retinaculum and tubercle of trapezium
Deep head: Trapezoid and capitate

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2
Q

Flexor Pollicis Brevis Insertion

A

Radial side of base of proximal phalanx of thumb

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3
Q

Flexor Pollicis Brevis Action

A

Flexes proximal phalanx of thumb, flexes and medial rotates metacarpal

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4
Q

Flexor Pollicis Brevis Innervation

A

Superficial head: Medial nerve (C8, T1)

Deep head: Deep branch of ulnar nerve (C8,T1)

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5
Q

Flexor Pollicis Brevis Blood Supply

A

Superficial palmar branches of radial artery

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6
Q

Adductor Pollicis Origin

A

Oblique head: Capitate and bases of 2-3rd metacarpals

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7
Q

Adductor Pollicis Insertion

A

Ulnar side of base of proximal phalanx of thumb

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8
Q

Adductor Pollicis Action

A

Adducts thumb

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9
Q

Adductor Pollicis Innervation

A

Deep branch of ulnar nerve (C8, T1)

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10
Q

Adductor Pollicis Blood Supply

A

superficial palmar branches or radial

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11
Q

Abductor Pollicis Brevis Origin

A

Flexor retinaculum and tubercle of trapezium

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12
Q

Abductor Pollicis Brevis Insertion

A

Base of proximal phalanx of thumb, dorsal digital expansion of thumb

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13
Q

Abductor Pollicis Brevis Action

A

Abducts thumb

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14
Q

Abductor Pollicis Brevis Innervation

A

Median Nerve (C8,T1)

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15
Q

Abductor Pollicis Brevis Blood Supply

A

Superficial palmar branches of radial artery

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16
Q

Opponens Pollicis Origin

A

Flexor retinaculum and tubercles of scaphoid and trapezium

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17
Q

Opponens Pollicis Insertion

A

Lateral border of 1st metacarpal

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18
Q

Opponens Pollicis Action

A

Opposes thumb

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19
Q

Opponens Pollicis Innervation

A

Median Nerve (C8, T1), often a small branch of deep ulnar nerve

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20
Q

Opponens Pollicis Blood Supply

A

Superficial palmar branches of radial artery

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21
Q

Abductor Digiti Minimi Origin

A

Pisiform and flexor carpi ulnaris tendon

22
Q

Abductor Digiti Minimi Insertion

A

Base of proximal phalanx and dorsal aponeurosis of little finger

23
Q

Abductor Digiti Minimi Action

A

Abducts little finger

24
Q

Abductor Digiti Minimi Innervation

A

Ulnar nerve, deep branch (C8,T1)

25
Q

Abductor Digiti Minimi Blood Supply

A

Deep palmar branches of ulnar artery

26
Q

Flexor Digiti Minimi Origin

A

Hamulus of hamate and flexor retinaculum

27
Q

Flexor Digiti Minimi Insertion

A

Base of proximal phalanx of little finger

28
Q

Flexor Digiti Minimi Action

A

Flexes little finger at MCP

29
Q

Flexor Digiti Minimi Innervation

A

Ulnar nerve, deep branch (C8,T1)

30
Q

Flexor Digiti Minimi Blood Supply

A

Deep palmar branches of ulnar artery

31
Q

Opponens Digiti Minimi Origin

A

Hamulus of hamate and flexor retinaculum

32
Q

Opponens Digiti Minimi Insertion

A

Ulnar side of 5th metacarpal

33
Q

Opponens Digiti Minimi Action

A

Opposes 5th digit

34
Q

Opponens Digiti Minimi Innervation

A

Ulnar nerve, deep branch (C8,T1)

35
Q

Opponens Digiti Minimi Blood Supply

A

Deep palmar branches of ulnar artery

36
Q

Dorsal Interossei Origin

A

Each arises by two head from adjacent sides of metacarpals

37
Q

Dorsal Interossei Insertion

A

Bases of proximal phalanges and dorsal expansions of 2-4th fingers

38
Q

Dorsal Interossei Action

A

Abduct fingers; flex at metacarpophalangeal joints and extend at interphalangeal joints

39
Q

Dorsal Interossei Innervation

A

Ulnar nerve, deep palmar branch (C8,T1)

40
Q

Dorsal Interossei Blood Supply

A

Palmar metacarpal artery of deep palmar arch

41
Q

Palmar Interossei Origin

A

Each arises by one head form the 2,4,5 metacarpals

42
Q

Palmar Interossei Insertion

A

Dorsal digital expansions of 2,4,5th fingers

43
Q

Palmar Interossei Action

A

Adduct fingers, flex at MCP and extend at IP joints

44
Q

Palmar Interossei Innervation

A

Ulnar Nerve, deep palmar branch (C8, T1)

45
Q

Palmar Interossei Blood Supply

A

Palmar metacarpal artery of deep palmar arch

46
Q

Lumbrical Origin

A

Flexor digitorum profundus tendon on 2-5th digits

47
Q

Lumbrical Insertion

A

Digital hood of 2-5

48
Q

Lumbrical Action

A

Flex MCP and extend IP

49
Q

Lumbrical Innervation

A

2nd/3rd: Median nerve (C8,T1)

4th/5th: Ulnar nerve (C8,T1)

50
Q

Lumbrical Blood Supply

A

Palmar metacarpal arteryof deep palmar arch

Muscles (9 decks)

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