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Upper Extremity Anatomy > Muscles of the Hand > Flashcards

Muscles of the Hand Flashcards

1
Q

Abductor pollicis longus

A

Origin: post radius, post ulna
Insertion: base 1st mc
Action: Abd 1st CMC joint
Innervation:post interosseous (radial)

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2
Q

extensor pollicis brevis

A

Origin: post radius
Insertion: base 1st prox phalanx
Action: ext 1st CMC and MCP
Innervation: post interosseous (radial)

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3
Q

extensor pollicis longus

A

Origin: post ulna
Insertion: base 1st distal phalanx
Action: ext 1st CMC, MCP, IP
Innervation: post interosseous (radial)

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4
Q

extensor indicis

A

Origin: post ulna
Insertion: 2nd mid and distal phalanges
Action: ext 2nd MCP, PIP, DIP, ext wrist
Innervation: post interosseous (radial)

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5
Q

lumbricals

A

Origin: tendons of flexor digitorum profundus
Insertion: dorsal digital expansion 2-5
Action: flex MCP, extend IP
Innervation: 1st and 2nd–median nerve, 3rd and 4th–deep ulnar nerve

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6
Q

dorsal interossei

A

Origin:first through fifth metacarpals
Insertion: base of teh 2nd, 3rd, 4th proximal phalange
Action: abd 2-4 MCP
Innervation: deep ulnar nerve

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7
Q

palmar interossei

A

Origin: 1. first interossus: ulnar side of the second metacarpal. 2. second interossus: radial side of the fourth metacarpal. 3. third interosseus: radial side of the 5th metacarpal
Insertion: base of teh 2nd, 4th, 5th proximal phalange
Action: Add 2,4,5 MCP
Innervation: Deep Ulnar Nerve

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8
Q

Abductor Pollicis brevis

A

Origin: flexor retinaculum
Insertion: base 1st prox phalanx
Action: abd thumb
Innervation: recurrent median

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9
Q

adductor pollicis transverse

A

Origin: 3rd MC
Insertion: base 1st prox phalanx
Action: add thumb
Innervation: deep ulnar nerve

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10
Q

adductor pollicis oblique

A

Origin: 2nd MC
Insertion: Base 1st prox phalanx
Action:add thumb
Innervation: deep ulnar nerve

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11
Q

opponens pollicis

A

Origin: trapezium
Insertion: 1st MC
Action: Opposition of thumb
Innervation: recurrent median

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12
Q

flexor pollicis brevis

A

Origin: flexor retinaculum
Insertion: base 1st prox phalanx
Action: flex thumb
Innervation:recurrent median

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13
Q

abductor digiti minimi

A

Origin: pisiform
Insertion: base 5th prox phalanx
Action: abd 5th MCP
Innervation: deep ulnar nerve

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14
Q

flexor digiti minimi

A

Origin: hamate
Insertion: base 5th prox phalanx
Action: flex 5th MCP
Innervation: deep ulnar nerve

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15
Q

opponens digiti minimi

A

Origin: hamate
Insertion: 5th MC
Action: opposition of 5th digit
Innervation: deep ulnar nerve

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16
Q

palmaris brevis

A

Origin: palmar aponeurosis
Insertion: skin of hypothenar eminence
Action: tenses skin of palm
Innervation: superficial ulnar

Upper Extremity Anatomy (8 decks)

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