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gross anatomy > Palm of the Hand UE4 > Flashcards

Palm of the Hand UE4 Flashcards

1
Q

carpals (proximal row)

A
  • scaphoid
  • lunate
  • triquetrum
  • pisiform
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2
Q

carpals (distal row)

A
  • trapezium
  • trapezoid
  • capitate
  • hamate
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3
Q

metacarpophalangeal (MCP) joints

A
  • condyloid
  • flexion, extension, abduction, and adduction
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4
Q

interphalangeal joints

A
  • proximal (PIP)
  • distal (DIP)
  • Hinge joint
  • flexion/extension
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5
Q

extrinsic muscles

A
  • located in the anterior and posterior compartments of the forearm
    ~ they control crude movements and produce forceful grip
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6
Q

intrinsic muscles

A
  • of the hand are located within the hand itself
    ~ responsible for the fine motor movements (writing, typing, etc.)
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7
Q

thenar compartment

A
  • abductor pollicis brevis
  • flexor pollicis brevis
  • opponens pollicis
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8
Q

adductor compartment

A

adductor pollicis

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9
Q

hypothenar compartment

A
  • abductor digiti minimi
  • flexor digiti minimi brevis
  • opponens digiti minimi
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10
Q

lumbricals (central compartment)

A

1-4 and associated with the long flexor tendons

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11
Q

interossei

A

located between the metacarpals

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12
Q

palmar aponeurosis

A
  • thickened fascia
  • provides a barrier between skin and underlying neurovascular structures
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13
Q

palmaris brevis

A

cuts the hand

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14
Q

dupuytren’s contracture

A

Dupuytren’s contracture results from thickening and shortening of the palmar aponeurosis, causing the digits to flex at the MCP and PIP joints.

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15
Q

1st (superficial) layer of muscles of the palm of the hand

A
  • thenar compartment
  • hypothenar compartment
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16
Q

2nd layer of muscles of palm of hand

A
  • lumbicals 1,2
  • lumbricals 3,4
17
Q

lumbicals 1,2

A

innervated by median nerve

18
Q

lumbricals 3,4

A

innervated by ulnar nerve

19
Q

the 2nd layer of muscles in the palm of the hand has a proximal attachment to?

A

flexor digitorum profundus

20
Q

the 2nd layers of muscles in the palm of the hand has a distal attachment to?

A

extensor expansions of digits 2-5

21
Q

3rd layer of muscles in the palm of the hand

A
  • opponens digiti minimi
  • adductor pollicis
  • opponens pollicis
22
Q

4th (deepest) layer of the muscles in the palm of the hand

A
  • 3 palmar interosseous muscles
  • 4 dorsal interosseous muscles
23
Q

arteries of the palm of the hand

A
  • ulnar and radial arteries
24
Q

ulnar and radial arteries supply?

A
  • the palm of the hand
    ~ branches from both vessels anastomose to make superficial palmar and deep palmar arches
25
Q

median nerve

A
  • enters the hand through carpal tunnel
  • recurrent branch of median nerve (motor)
    ~3 thenar muscles

palmar branches of median nerve
~lateral 2 lumbricals

  • sensory to lateral 3 1/2 digits
26
Q

ulnar nerve

A
  • superficial branch (sensory)
  • deep branch (motor)

gross anatomy (11 decks)

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