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Muscles O,I&A's > Muscles of hand > Flashcards

Muscles of hand Flashcards

1
Q

Origin of Abductor Digiti Minimi

A

Pisiform

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2
Q

Insertion of Abductor Digiti Minimi

A

Base of proximal phalanx of 5th digit on it ulnar side

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3
Q

Action of Abductor Digiti Minimi

A

Abducts 5th digit

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4
Q

Origin of Abductor Pollicis Brevis

A

Flexor retinaculum
Scaphoid
Trapezium

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5
Q

Insertion of Abductor Pollicis Brevis

A

Base of proximal phalanx of 1st digit

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6
Q

Action of Abductor Pollicis Brevis

A

Abducts thumb

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7
Q

Origin of Adductor Pollicis

A

Oblique head: Capitate & base of 2nd &3rd metacarpals
Transverse Head: shaft of 3rd metacarpal

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8
Q

Insertion of Adductor Pollicis

A

Base of proximal phalanx of thumb

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9
Q

Action of Adductor Pollicis

A

Adducts thumb

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10
Q

Origin of Dorsal Interosseous (hand)

A

4 muscles ; arising from 2 adjacent metacarpal shafts

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11
Q

Insertion of Dorsal Interosseous (hand)

A

Base of proximal phalanx
Extensor expansion on lateral side of the 2nd digit
Lateral and medial side of 3rd digit
Medial side of 4th digit

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12
Q

Origin of Flexor Digiti Minimi (hand)

A

Hook of hamate
Flexor Retinaculum

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12
Q

Action of Dorsal interosseous (hand)

A

Flexes MCP joint
Extends PIP and DIP joints 2-4
Abducts digits 2-4

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13
Q

Insertion of Flexor Digiti Minimi (hand)

A

Proximal phalanx of 5th digit

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14
Q

Action of Flexor Digiti Minimi (hand)

A

Flexes carpometacarpo and MCP joints of 5th digit

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15
Q

Origin of Flexor Pollicis Brevis

A

Flexor retinaculum
Trapezium

16
Q

Insertion of Flexor Pollicis Brevis

A

Proximal Phalanx of 1st digit

17
Q

Action of Flexor Pollicis Brevis

A

Flexes carpometacarpo and MCP joints of thumb

18
Q

Origin of Lumbricals (of hand)

A

Flexor digitorum profundus tendons of digits 2-5

19
Q

Insertion of Lumbricals (of hand)

A

Extensor expansion on the radial side of the proximal phalanz of digits 2-5

20
Q

Actions of Lumbricals (of hand)

A

Flexes the MCP joints of digits 2-5
Extends the PIP & DIP joints of digits 2-5

21
Q

Origin of Opponens Digiti Minimi

A

Hook of hamate
Flexor retinaculum

22
Q

Insertion of Opponens Digiti Minimi

A

Shaft of 5th metacarpal

23
Q

Action of Opponens Digiti Mimini

A

Opposes 5th digit

24
Q

Origin of Opponens Pollicis

A

Flexor retinaculum
Trapezium

25
Q

Insertion of Opponens Pollicis

A

Shaft of 1st metacarpal

26
Q

Action of Opponens Pollicis

A

Opposes thumb

27
Q

Origin of Palmar Interosseous

A

4 muscles ; arising from palmar surface of the shafts of the metacarpals 1,2,4&5

28
Q

Insertion of Palmar Interosseous

A

Base of proximal phalanx
Extensor expansion of medial side of digits 1&2 and lateral side of digits 4&5

29
Q

Action of Palmar Interosseous

A

Flexes the MCP joints of digits 1,2,4&5
Extends PIP&DIP joints of digits 1,2,4&5
Adducts digits 1,2,4,&5

30
Q

Origin of Palmaris Brevis

A

Fascia overlying the hypothenar eminance

31
Q

Insertion of Palmaris Brevis

A

Skin of the palm near the ulnar border of the hand

32
Q

Action of Palmaris Brevis

A

Draws the skin of the ulnar side of hand toward center of palm

Muscles O,I&A's (13 decks)

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