Intrinsic Muscles of hand Flashcards by Thida Thida | Brainscape

Q

abductor pollicis brevis (insertion)

A

proximal phalanx of thumb

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Q

abductor pollicis brevis (origin)

A

flexor retinaculum

lateral carpals

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Q

abductor pollicis brevis (innervation)

A

recurrent branch of median nerve

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Q

abductor pollicis brevis (action)

A

abducts thumb

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Q

flexor pollicis brevis (origin)

A

flexor retinaculum,

lateral carpals

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Q

flexor pollicis brevis (insertion)

A

proximal phalanx of thumb

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Q

flexor pollicis brevis (innervation)

A

recurrent branch of median nerve

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Q

flexor pollicis brevis (action)

A

flexes thumb

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Q

opponens pollicis (origin)

A

flexor retinaculum

lateral carpals

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Q

opponens pollicis (insertion)

A

1st metacarpal

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Q

opponens pollicis (innervation)

A

recurrent branch of median nerve

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Q

opponens pollicis (action)

A

opposes thumb

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Q

adductor pollicis (origin)

A

3rd metacarpal

carpals

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Q

adductor pollicis (insertion)

A

proximal phalanx of thumb

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Q

adductor pollicis (innervation)

A

deep branch of ulnar nerve

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Q

adductor pollicis (action)

A

adducts thumb

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Q

abductor digiti minimi brevis (origin)

A

medial carpals

Q

abductor digiti minimi (insertion)

A

proximal phalanx of little finger

Q

abductor pollicis (innervation)

A

deep branch of ulnar nerve

Q

abductor digiti minimi (action)

A

abduct little finger

Q

flexor digiti minimi brevis (origin)

A

flexor retinaculum

medial carpals

Q

flexor digiti minimi brevis (insertion)

A

proximal phalanx of little finger

Q

flexor digiti minimi brevis (innervation)

A

deep branch of ulnar nerve

Q

flexor digiti minimi brevis (action)

A

flexes little finger (MP joint)

Q

opponens digiti minimi (origin)

A

flexor retinaculum

medial carpals

Q

opponens digiti minimi (insertion)

A

5th metacarpal

Q

opponens digiti minimi (innervation)

A

deep branch of ulnar nerve

Q

opponens digiti minimi (action)

A

opposes little finger

Q

lumbricals (origin)

A

tendons of flexor digitorum profundus

Q

lumbricals (insertion)

A

extensor expansions at digits 2-5

Q

lumbricals (innervation)

A

lumbrical 1-2 (by median nerve)

lumbrical 3-4 (by deep branch of ulnar nerve)

Q

lumbricals (action)

A

L shape
extension of digits at IP joints
flexion of digits 2-4 at MP joints

Q

dorsal interossei (origin)

A

metacarpals

Q

dorsal interossei (insertion)

A

extensor expansions and proximal phalanges of digit 2-4

Q

dorsal interossei (innervation)

A

deep branch of ulnar nerve

Q

dorsal interossei (action)

A

abduction of digits 2-4

Q

palmar interossei (origin)

A

Metacarpals

Q

palmar interossei (insertion)

A

extensor expansions and proximal phalanges of digit 2,4,5

Q

palmar interossei (innervation)

A

deep branch of ulnar nerve

Q

palmar interossei (action)

A

adduction of digit 2,4,5