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Anatomy UE > Hand > Flashcards

Hand Flashcards

1
Q

The hand contains how many bones?

A

27

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2
Q

How many intrinsic muscles do the the hand have?

A

18

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3
Q

The deep fascia is a continuation of what fascia?

A

antebrachial fascia

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4
Q

The fascia on the dorsum of the hand is a continuation of what?

A

Extensor Retinaculum

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5
Q

The fascia on the dorsum of the will continue distally from the Extensor Retinaculum to where?

A

The distal phalanges

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6
Q

What are the three parts of the palmar fascia?

A
  • Hypothenar fascia
  • Thenar Fascia
  • Palmar aponeurosis
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7
Q

The hypothenar fascia is a thin layer over what?

A

hypothenar eminence

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8
Q

The thenar fascia is a thin layer over what?

A

thenar eminence

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9
Q

Palmar aponeurosis is supported by what muscle

A

palmaris longus muscle

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10
Q

The palmar has how many bands extending to the proximal phalanges

A

4 bands

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11
Q

Any lesion to that decreases the size of the carpal results in what?

A

Carpal Tunnel Syndrome

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12
Q

What are 3 possible causes of carpal tunnel syndrom

A
  • fluid retension
  • infection
  • excessive exercise
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13
Q

What is the softest structure in the carpal tunnel that is most effected by an increase in pressure

A

Median Nerve

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14
Q

What are the two main symptoms of carpal tunnel syndrome

A
  • decrease in sensation to the lateral 3 1/2 fingers (paresthesia, hyposthesia, anesthesia)
  • Thenar wasting, and/or weakness of thumb movements
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15
Q

What thumb movement is spare due to ulnar nerve innervation during carpal tunnel syndrome

A

Thumb adduction

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16
Q

What are the five compartments of the hand?

A
  • thenar compartment
  • adductor compartment
  • hypothenar compartment
  • central compartment
  • interosseous compartment
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17
Q

What are the three muscles in the thenar compartment?

A
  • adductor pollicis brevis
  • flexor pollicis brevis
  • oppenens pollicis
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18
Q

What is the one muscle in the adductor compartment of the hand?

A

Adductor pollicis

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19
Q

What are the three muscles in the hypothenar compartment?

A
  • adductor dgiti minimi
  • flexor digiti minimi brevis
  • opponens digit minimi
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20
Q

What is the only group of muscles in the central compartment of the hand?

A

lumbricals

21
Q

What are the two muscle groups in the interosseous compartments of the hand?

A
  • Palmar interosseous muscles

- dorsal interosseous muscles

22
Q

What is the one muscle with a brevis but not a lungus

A

-flexor digiti minmi

23
Q

What muscle group plays a role in proprioception of the hand

A

lumbricals

24
Q

what muscle group helps extend a flexed finger to make the okay sign?

A

Lumbricals

25
Q

What branch of the median nerve will come off just proximal to the the carpal tunnel (not through) to give cutaneous sensation to the skin of the central palm

A

palmar cutaneous branch

26
Q

What branch of median nerve comes off just distal to the carpal tunnel and innervates the thenar muscles

A

Recurrent thenar branch

27
Q

The median nerve extends distally to the digits. When it begins to move towards the digits the nerves are call ___ then as they reach the distal phalanges they become ___

A
  • Common palmar digital nerves

- proper digital nerves

28
Q

Median nerve innervates what fingers?

A

lateral 3 1/2 fingers

29
Q

What branch of ulnar nerve provides cutaneous innervation to the palm

A

palmar cutaneous branch of ulnar nerve

30
Q

What branch of ulnar nerve provides cutaneous innervation to the dorsal surface of the hand and the medial 1 1/2 digits

A

dorsal cutaneous branch of ulnar nerve

31
Q

Superficial branch of the ulnar nerve provides innervation to what?

A

cutaneous innervation to the palmar surface of the medial 1 1/2 digits

32
Q

The deep branch of ulnar nerve innervates what muscles?

A
  • Hypothenar muscles
  • 3rd and 4th lumbricals
  • dorsal and palmar interossei muscles
  • adductor pollicis
  • part of flexor pollicis brevis
33
Q

Radial nerve passes through what structure

A

anatomical snuff box

34
Q

Superficial branch of radial nerve provides cutaneous innervation to what?

A
  • dorsal aspect of lateral hand

- dorsal aspect of the lateral 3 1/2 digits proximal to the DIP joint

35
Q

Claw hand is due to damage of what nerve?

A

Ulnar nerve

36
Q

What muscles are weakened most in claw hand?

A

lumbricals

37
Q

What muscle becomes unopposed in the 4th and 5th digits during claw hand

A

Extensor digitorum muscle

38
Q

What nerve is damaged during Ape Hand

A

Median nerve

39
Q

Ape hand results in the wasting of what muscles?

A

Thenar muscles

40
Q

What nerve is damaged during the hand of benediction?

A

median nerve

41
Q

During the hand of benediction what fingers are unable to flex

A

lateral 3 1/2 finger

42
Q

What nerve is damaged during wrist drop

A

radial nerve

43
Q

What muscle group are effected during wrist drop

A

wrist extensors

44
Q

Ulnar artery will split into what two branches once in the hand?

A
  • Superficial branch of Ulnar A.

- deep branch of Ulnar A.

45
Q

What makes up most of the Superficial Palmar arch?

A

Superficial Ulnar Artery

46
Q

What makes up most of the deep palmar arch?

A

Deep Radial Artery

47
Q

Princeps Pollicis Comes from what artery (radial/ulnar)?

A

Radial

48
Q

Radial Indicis artery comes from what artery Princeps Pollicis Comes from what artery (radial/ulnar)?

A

Radial

Anatomy UE (10 decks)

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