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pt gross > Forearm and Hand Muscles - Hand > Flashcards

Forearm and Hand Muscles - Hand Flashcards

1
Q

Abductor Pollicis Brevis Origin

A

Flexor retinaculum and tubercles of the scaphoid and trapezium

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2
Q

Abductor Pollicis Brevis Insertion

A

Lateral side and base of proximal phalanx of the thumb

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3
Q

Abductor Pollicis Brevis Innervation

A

Recurrent branch of the median nerve

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4
Q

Abductor Pollicis Brevis Action

A

Abduction of the thumb, helps oppose it

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5
Q

Abductor Pollicis Brevis Root

A

C8, T1

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6
Q

Flexor Pollicis Brevis Origin

A

Flexor retinaculum and tubercles of the scaphoid and trapezium

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7
Q

Flexor Pollicis Brevis Insertion

A

Lateral side of the proximal phalanx of the thumb

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8
Q

Flexor Pollicis Brevis Innervation

A

Recurrent branch of the median nerve

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9
Q

Flexor Pollicis Brevis Action

A

Flexion of the thumb

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10
Q

Flexor Pollicis Brevis Root

A

C8, T1

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11
Q

Opponens Pollicis Origin

A

Flexor retinaculum and tubercles of the scaphoid and trapezium

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12
Q

Opponens Pollicis Insertion

A

Lateral side of the 1st metacarpal

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13
Q

Opponens Pollicis Innervation

A

Recurrent branch of the median nerve

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14
Q

Opponens Pollicis Action

A

To oppose thumb, it draws 1st metacarpal medially to center of palm and rotates it medially

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15
Q

Opponens Pollicis Root

A

C8, T1

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16
Q

Abductor Digiti Minimi Origin

A

Pisiform

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17
Q

Abductor Digiti Minimi Insertion

A

Medial side of the base of proximal phalanx of the 5th digit

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18
Q

Abductor Digiti Minimi Innervation

A

Deep branch of the ulnar nerve

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19
Q

Abductor Digiti Minimi Action

A

Abducts 5th digit; assists in flexion of its proximal phalanx

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20
Q

Abductor Digiti Minimi Root

A

C8, T1

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21
Q

Flexor Digiti Minimi Origin

A

Hook of hamate and flexor retinaculum

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22
Q

Flexor Digiti Minimi Insertion

A

Medial side of the base of proxmial phalanc of the 5th digit

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23
Q

Flexor Digiti Minimi Innervation

A

Deep branch of the ulnar nerve

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24
Q

Flexor Digiti Minimi Action

A

Flexes proximal phalanx of 5th digit

25
Q

Flexor Digiti Minimi Root

26
Q

Opponens Digiti Origin

A

Hook of hamate and flexor retinaculum

27
Q

Opponens Digiti Insertion

A

Medial border of the 5th metacarpal

28
Q

Opponens Digiti Innervation

A

Deep branch of the ulnar nerve

29
Q

Opponens Digiti Action

A

Draws 5th metacarpal anterior and rotates it, bringing 5th digit into opposition with thumb

30
Q

Opponens Digiti Root

31
Q

Lumbricals (1-2) Origin

A

Lateral 2 tendons of flexor digitorum profundus (as unipennate muscles)

32
Q

Lumbricals (1-2) Insertion

A

Lateral sides of the extensor expansions of the digits (2-5)

33
Q

Lumbricals (1-2) Innervation

A

Median nerve

34
Q

Lumbricals (1-2) Action

A

Flex metacarpophalangeal joints; extend interphalangeal joints of 2-5 digits

35
Q

Lumbricals (1-2) Root

36
Q

Lumbricals (3-4) Origin

A

Medial 3 tendons of flexor digitorum profundus (as bipennate muscles)

37
Q

Lumbricals (3-4) Insertion

A

Lateral sides of the extensor expansions of the digits (2-5)

38
Q

Lumbricals (3-4) Innervation

A

Deep branch of the ulnar nerve

39
Q

Lumbricals (3-4) Action

A

Flex metacarpophalangeal joints; extend interphalangeal joints of 2-5 digits

40
Q

Lumbricals (3-4) Root

41
Q

Palmar Interossei (1-3) Origin

A

Palmar surfaces of 2nd, 4th, and 5th metacarpals (as unipennate muscles)

42
Q

Palmar Interossei (1-3) Insertion

A

Bases of the proximal phalanges and extensor expansions of (2,4,5) digits

43
Q

Palmar Interossei Innervation

A

Deep branch of the ulnar nerve

44
Q

Palmar Interossei Action

A

Adduct (2,4,5) digits toward axial line; assist lumbricals in flexing metacarpophalangeal joints and extending interphalangeal joints; extensor expansions of digits 2-4

45
Q

Palmar Interossei Root

46
Q

Dorsal Interossei (1-4) Origin

A

Adjacent sides of two metacarpals (as bipennate muscles)

47
Q

Dorsal Interossei (1-4) Insertion

A

Bases of the proximal phalanges, extensor expansions of 2-4th digits

48
Q

Dorsal Interossei (1-4) Innervation

A

Deep branch of the ulnar nerve

49
Q

Dorsal Interossei (1-4) Action

A

Abduct 2-4th digits from the axial line, act with lumbricals in flexing metacarpophalangeal joints and extending interphalangeal joints

50
Q

Dorsal Interossei (1-4) Root

51
Q

Adductor Pollicis Origin

A

Bases of 2nd and 3rd metacarpals, capitate, and adjacent carpals

52
Q

Adductor Pollicis Insertion

A

Medial side of base of proximal phalanx of thumb

53
Q

Adductor Pollicis Innervation

A

recurrent branch of median nerve (C8,T1)

54
Q

Adductor Pollicis Action

A

Adducts thumb lateral border of palm

55
Q

Adductor Pollicis Root

56
Q

Palmaris Brevis Origin

A

Deep surface of dermis in proximal, anterior and medial aspect of palm

57
Q

Palmaris Brevis Insertion

A

Medial border of palmar aponeurosis

58
Q

Palmaris Brevis Innervation

A

Superficial branch of ulnar nerve

59
Q

Palmaris Brevis Action

A

Wrinkles palmar skin; protects the ulnar neurovasculature through tunnel of guyon

pt gross (17 decks)

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