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Human Anatomy Fall 2017 > Muscles Wrist and Hand > Flashcards

Muscles Wrist and Hand Flashcards

1
Q

Abductor pollicis brevis inserts?

A

thumb

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2
Q

Abductor pollicis brevis innervated?

A

recurrent branch of median nerve

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3
Q

Abductor pollicis brevis action?

A

abduction

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4
Q

Flexor pollicis brevis inserts?

A

thumb

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5
Q

Flexor pollicis brevis innervation?

A

recurrent branch of median nerve

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6
Q

Flexor pollicis brevis action?

A

flexion

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7
Q

opponens pollicis innervation?

A

recurrent branch of median nerve

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8
Q

opponens pollicis action?

A

opposes thumb to pinky

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9
Q

What does the recurrent branch of median nerve innervate?

A

opponens pollicis, Abductor pollicis brevis, Flexor pollicis brevis (Thenar compartment)

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10
Q

adductor pollicis traverse head and oblique head innervation and action?

A

ulnar nerve

adds thumb back

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11
Q

Palmaris brevis innervation?

A

ulnar

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12
Q

palmaris brevis action?

A

make a loose fist, then tighten it… it is the muscle that bulges on side

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13
Q

opponenes digiti minimi innervation and action?

A

ulnar nerve

opposition

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14
Q

flexor digiti minimi brevis innervation and action?

A

ulnar nerve

flexion

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15
Q

abductor digiti minimi innervation and action?

A

ulnar nerve

abduction

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16
Q

lumbricals origin?

A
  • muscle bellies originate off of tendons of flexor digitorium profundus
  • Numbered 1, 2, 3, 4
  • ** 1&2 unipendent
  • **3&4 are bipendent
17
Q

lumbricals insert?

A

extensor expansion sheath

18
Q

lumbricals innervation?

A

1&2 median nerve

3&4 ulnar nerve

19
Q

lumbricals action?

A

flex at MPC joint

extension at PAP joint

20
Q

palmar interossei innervation?

A

ulnar nerve

21
Q

palmar interossei action?

A

adduct
contraction adds the digits to the axial line of the thrid digit
PAD

22
Q

dorsal interossei innervation

A

ulnar nerve

23
Q

dorsal interossei action?

A

Abduct
moving away from the thrid digit
DAB
(deep to palmar interossei)

24
Q

flexor digitorum profundus inserts?

A

spans all the way to distal phalanx

25
Q

flexor digitorum profundus action?

A

Can flex ALL joints (MCP, PIP, DIP)

Human Anatomy Fall 2017 (19 decks)

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