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UNIT 7 MSK > P3 ANATOMY > Flashcards

P3 ANATOMY Flashcards

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1
Q

which bone is stable & which is movable in pronation

A

ulna > stable
Radius > movable

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2
Q

how many carpals bone are there
name them

A

8
1- scaphoid
2- trapezium
3- trapezoid
4- lunate
5- pisiform
6- capitate
7- hamate
8- triquetrum

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3
Q

which carpal bone is the largest

A

capitate

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4
Q

finger that has only proximal & distal phalanges

A

thumb

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5
Q

how many metacarpals are there

A

5

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6
Q

how many phalanges are there

A

14

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7
Q

joint type in DIP & PIP

A

hinge synovial

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8
Q

type of joint in CM of thumb

A

saddle

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9
Q

from lateral to medial mention the superficial group of flexors

A

Pronator teres.
Flexor carpi radialis.
Palmaris longus.
Flexor carpi ulnaris.

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10
Q

flexor muscles arise from

A

medial epicondyle

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11
Q

extensor muscles arise from

A

lateral epicondyle

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12
Q

a flexor muscle that does not cross wrist joint

A

pronator teres

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13
Q

action of pronator teres

A

pronation of forearm especially during flexion of elbow joint.

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14
Q

action of flexor carpi radials

A

Flexes and abducts hand at the wrist joint

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15
Q

action of palmaris longus

A

flexion of the hand at wrist joint.

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16
Q

action of flexor carpi ulnaris

A

flexion and adduction of the hand at wrist joint

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17
Q

action of Flexor digitorum superficialis

A

lexion of MP and proximal IP joints of
medial 4 fingers.
Helps of flexion of wrist joint.

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18
Q

innervation of superficial & intermediate groups

A

median nerve

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19
Q

nerve that innervates flexor carpi ulnaris

A

ulnar nerve

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20
Q

lateral 1/2 of FDP is innervated by

A

ant. inter-osseous nerve

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21
Q

middle 1/2 of FDP is innervated by

A

ulnar nerve

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22
Q

action of FDP

A

Flexion of MP, proximal IP & distal IP (all)
joints of medial 4 fingers.
Helps in flexion of wrist joint

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23
Q

action of flexor pollicis longus

A

lexion of MP and IP (all)
joints of the thumb.

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24
Q

action of pronator quadratus

A

Pronation of forearm at radioulnar joints.

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25
Q

Thickened band of deep fascia bridges over the carpal groove

A

FLEXOR RETINACULUM

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26
Q

thickened band of deep fascia bridges over the carpal groove transforming it into

A

carpal tunnel.

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27
Q

FLEXOR RETINACULUM medial attachments

A

pisiform and hook of hamate.

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28
Q

FLEXOR RETINACULUM lateral attachments

A

scaphoid and trapezium.

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29
Q

CONTENTS OF CARPAL TUNNEL

A
  • median nerve
  • 4 FDP
  • 4 FDS
  • 1 flexor pollicis longus
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30
Q

nerve compressed in carpal tunnel syndrome

A

median nerve

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31
Q

Number of muscle in post. Compartment / extensors

A

12

32
Q

Origin of all extensor muscles

A

lateral epicondyle

33
Q

Extensor Muscles of superficial group

A

Brachioradialis.
Extensor carpi radialis longus.
Extensor carpi radialis brevis.
Extensor digitorum. Extensor digiti minimi. Extensor carpi ulnaris.
Anconeus.

34
Q

Action of Brachioradialis.

A

Flexes forearm especially in midprone
position.
Initiation of pronation and supination.

35
Q

Action of Extensor carpi radialis longus.

A

Extends wrist joint and abducts hand.

36
Q

action of Extensor carpi radialis brevis

A

Extends wrist joint and abducts hand.

37
Q

action of Extensor digitorum

A

Extends MP, proximal IP and distal IP joints of medial 4 fingers.
Extends the wrist.

38
Q

action of Extensor digiti minimi

A

Extends all joints of little finger.
Extends wrist joint.

39
Q

action of Extensor carpi ulnaris

A

Extends wrist joint and adducts the hand.

40
Q

action of Anconeus

A

Extends elbow joint.

41
Q

mention from lateral to medial extensor muscles of deep group

A

1- Abductor pollicis longus.
2. Extensor pollicis brevis.
3. Extensor pollicis longus.
4. Extensor indices.
5. Supinator.

42
Q

action of Abductor pollicis longus

A

Abduction of thumb at CM joint.

43
Q

action of Extensor pollicis brevis

A

extension of thumb at CM and MP joints.

44
Q

Action ofExtensor pollicis longus

A

Extends the thumb at CM, MP and IP joints.

45
Q

Action of Extensor indicis

A

Extends index finger at MP,
proximal IP, and distal IP joints.
Extend wrist.

46
Q

action of Supinator

A

Supinates the forearm

47
Q

innervation of Brachioradialis, extensor carpi radialis longus and anconeus

A

radial nerve

48
Q

rest of extensors are supplied by

A

POSTERIOR INTEROSSEUS NERVE.

49
Q

Thickened band of deep fascia on the back of wrist joint.

A

EXTENSOR RETINACULUM

50
Q

Medial attachment of EXTENSOR RETINACULUM

A

triquetrum and pisiform bones.

51
Q

lateral attachment of EXTENSOR RETINACULUM

A

lower part of anterior border of the radius.

52
Q

Muscles of supination

A

Biceps brachii ,Supinator

53
Q

Muscles of pronation

A

Pronator teres. Pronator quadratus.

54
Q

lateral boundaries of anatomical snuff box

A

tendons of abductor pollicis longus and extensor pollicis brevis.

55
Q

Medial boundaries of anatomical snuff box

A

extensor pollicis longus tendon

56
Q

Contents of anatomical snuff box

A

radial art.
radial nerve
cephalic vein

57
Q

action of Palmaris brevis

A

Wrinkles skin and deepens hollow of the palm, as in cupping of the hand, thereby improve the grip

58
Q

Triangular thick band of deep fascia in the middle of the palm of hand.

A

PALMAR APONEUROSIS

59
Q

clinical significance of PALMAR APONEUROSIS is seen in

A

Dupuytren’s contracture

60
Q

mention THENAR MUSCLES

A

Abductor pollicis brevis
2. Flexor pollicis brevis
3. Opponens pollicis
4. Adductor Pollicis

61
Q

Movements of thumb

A
  • aduction
  • abduction
  • flexion
  • extension
  • opposition
  • reposition
62
Q

mention HYPOTHENAR MUSCLES

A

1-Abductor digiti minimi
2. Flexor digiti minimi
3. Opponens digiti minimi

63
Q

PALMAR INTEROSSEI MUSCLES action

A

Adducts 2nd, 4th and 5th fingers (PAD) towards the axis

64
Q

DORSAL INTEROSSEI MUSCLES action

A

Abducts 2nd - 4th fingers (DAP)
from the axis.

65
Q

action of LUMBRICAL MUSCLES

A

together with palmar and dorsal interossei, flex digits at MCP joints and extend IP joints (writing position).

66
Q

Intrinsic muscles are innervated by

A

deep branch of ulnar nerve

67
Q

INTRNISIC MUSCLES OF THE HAND exception for the innervation by deep ulnar nerve are innervated by

A

median nerve

68
Q

Is triangular fibrous sheath located in the dorsum of proximal phalanx.

A

EXTENSOR EXPANSION

69
Q

FASCIAL COMPARTMENTS of the hand

A

. Thenar compartment contains 3 thenar muscles.
2. Hypothenar compartment:
contains 3 hypothenar muscles.
3. Central compartment: long flexor tendons and lumbricals.

70
Q

2 spaces of the hand are

A

thenar space
mid - palmar space

71
Q

Superficial Palmar Arch is mainly formed by

A

cont. of ulnar art.

72
Q

branches of Superficial Palmar Arch

A

3 Common palmar digital arteries. Each of them divides into 2 Proper palmar digital arteries which run along the sides of 2nd – 4th fingers.

73
Q

Deep Palmar Arch is mainly formed by

A

Direct continuation of radial
artery

74
Q

branches of Deep Palmar Arch

A

3 palmar metacarpal arteries.
Princeps pollicis artery.
Radialis indicis artery.

75
Q

Identify the deformity & the nerve injury

A

Partial CLAW HAND
ULNAR NERVE injury

76
Q

Identify the deformity & the nerve injury

A

wrist drop
radial nerve injury

77
Q

Identify the deformity & the nerve injury

A

ape hand seen in carpal tunnel syndrome
median nerve injury

UNIT 7 MSK (23 decks)

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