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Anatomy E2 > Starred Lecture Items L11 > Flashcards

Starred Lecture Items L11 Flashcards

1
Q

three reasons you can tell if distal humerus (elbow) bone is posterior

A

medial sticks out further than the lateral epicondyle
trochlea is distal
head of the radius is lateral

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2
Q

how many carpal bones (1 hand)

A

8

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3
Q

how many metacarpal bones (1 hand)

A

5

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4
Q

how many phalanges of long fingers (1 hand)

A

12

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5
Q

how many phalanges of thumb (1 hand)

A

2

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6
Q

how many bones total from your watch down

A

29 bones

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7
Q

bony landmark of distal radius/ ulna

A

radial styloid and ulnar styloid

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8
Q

where is the head of the ulna

A

at the wrist

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9
Q

where is the lister’s tubercle found

A

distal, dorsal radial side

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10
Q

how many carpals in the proximal row

A

4

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11
Q

how many carpals in the distal row

A

4

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12
Q

acronym for carpal bones

A

so long to pinkie here comes the thumb
scaphoid, lunate, triquetrum, pisiform, hamate, capitate, trapezoid, trapezium

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13
Q

how do you know if hand is dorsal or ventral based on bone orientation

A

listers tubercle is only visible on dorsal side, pisiform (sesamoid) bone is partially eclipsed on the dorsal side, (ventral is fully visible)

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14
Q

distal radioulnar joint (DRUJ) movement

A

only pronation and supination

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15
Q

radiocarpal joint movement

A

wrist flexion, extension, radial deviation, ulnar deviation

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16
Q

which of the following joints when injured will restrict wrist flexion and extension

A

radiocarpal joint

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17
Q

which arm bone contributes at the wrist

A

only the radius articulates

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18
Q

why does the ulna not contribute at the wrist

A

its shorter so it doesnt articulate

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19
Q

which bone is higher in the elbow

A

olecranon is more proximal/ higher than radial head

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20
Q

which bones are involved in the radiocarpal joint?

A

radius and scaphoid & lunate

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21
Q

midcarpal joint movements

A

flexion, extension, radial deviation, ulnar deviation, circumduction

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22
Q

radial collateral ligament is found in…

A

radial side of elbow and wrist

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23
Q

what ligament takes up the space between the ulna and wrist

A

triangular fibrocartilage (TFC) disc– cushion between ulna and carpals

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24
Q

metacarpophalangeal joint movement

A

flexion, extension, abduction, adduction

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25
Q

what tendon connects into the pisiform

A

FCU

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26
Q

laymen’s term for metacarpophalangeal joints

A

knuckles

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27
Q

where does ab/adduction happen in the fingers

A

metacarpophalangeal joints

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28
Q

interphalangeal joints movements and types

A

finger flexion extension
proximal and distal interphalangeal joints (PIP and DIP)

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29
Q

how many IP joints in the thumb

A

1

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30
Q

carpometacarpal joint/ basilar joint motion

A

flexion extension abduction adduction of thumb

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31
Q

what carpal bone articulates with the 1st metacarpal

A

trapezium

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32
Q

peripheral nerve sensory innervations

A
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33
Q

extrinsic muscles of the arm (where does it start/ end and function)

A

originates proximal to wrist
generates greater force

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34
Q

intrinsic muscles (where do they start and end and function)

A

contains entirely within the hand
generates precise control

35
Q

superficial layer of the extrinsic extensor muscles (5)

A

ECRL
ECRB
ECU
extensor digitorum
extensor digiti minimi

36
Q

deep layer of the extrinsic extensor muscles

A

extensor indicis
supinator

37
Q

brachioradialis attachments

A

lateral supracondylar ridge of humerus
distal lateral radius

38
Q

outcropping layer of the extrinsic extensor muscles

A

APL
EPB
EPL

39
Q

extensor carpi radialis longus and brevis action

A

extend the wrist
radially deviate the wrist

40
Q

extensor carpi radialis longus and brevis attachments

A

longus: lateral supra-epicondylar ridge of humerus and dorsal base of 2nd metacarpal

brevis: lateral epicondyle of humerus and dorsal base of 3rd metacarpal

41
Q

tennis elbow involves what muscles

A

superficial extensors ECRL and ECRB

42
Q

which is acute & which is chronic: lateral epicondylitis vs epicondylosis

A

epicondylitis= chronic (inflamed, wear & tear)
epicondylosis (acute)

43
Q

extensor digitorum actions

A

extends medial 4 digits

44
Q

extensor digitorum attachments

A

extensor expansion of medial 4 digits
lateral epicondyle of humerus (common extensor tendon)

45
Q

extensor digiti minimi actions

A

extend 5th digit

46
Q

extensor digiti minimi attachments

A

lateral epicondyle of humerus
extensor expansion of 5th digit

47
Q

is there a flexor carpi radialis longus

A

no

48
Q

which two muscles attach to base of the 5th metacarpal

A

FCU and ECU

49
Q

two main muscles that flex wrist

A

FCU FCR

50
Q

two and a half muscles that extend wrist

A

ECU ECRL ECRB

51
Q

two muscles that radially deviate

A

ECRL ECRB FCR

52
Q

two muscles that ulnar deviate

A

ECU FCU

53
Q

which two lift pointer finger

A

extensor digitorum and extensor indicis

54
Q

extensor indicis actions

A

extend 2nd digit
ASSIST with wrist extension

55
Q

extensor indicis attachments

A

posterior distal ulna and interosseous
extensor expansion 2nd digit

56
Q

outcropping muscles

A

abductor pollicis longus
extensor pollicis brevis
extensor pollicis longus

57
Q

abductor pollicis longus attachments

A

posterior proximal ulna, radius, and interosseous membrane
base of 1st metacarpal

58
Q

what radially abducts the thumb

A

abductor pollicis longus

59
Q

abductor pollicis longus attachments

A

posterior proximal ulna, radius, and interosseous membrane
base of 1st metacarpal

60
Q

extensor pollicis brevis and longus attachments

A

longus: posterior ulna and interosseous membrane
brevis: posterior radius and interosseous membrane

longus: base of distal phalanx of thumb
brevis: base proximal phalanx of thumb

61
Q

extensor pollicis brevis and longus actions

A

longus: extend thumb at the IP joint
both: extend thumb at MCP and CMC joints

62
Q

which muscle extends the distal phalanx of thumb

A

extensor pollicis longus

63
Q

what muscles create the anatomical snuffbox

A

APL
EPB
EPL

64
Q

dermatomes for the arm

A
65
Q

dermatomes for the hand

A
66
Q

whats the dermatome and myotome for the thumb

A

myotome/ thumb extension= C8
skin is enervated by= C6

67
Q

what keeps tendons in place and separates them into 6 compartments

A

extensor retinaculum

68
Q

what are the 6 dorsal wrist compartments

A
69
Q

dorsal wrist compartment 1

A

abductor pollicis longus and extensor pollicis brevis (APL and EPB)

70
Q

dorsal wrist compartment 2

A

extensor carpi radialis longus and extensor carpi radialis brevis (tennis elbow)

71
Q

dorsal wrist compartment 3

A

extensor pollicis longus (listers tubercle)

72
Q

dorsal wrist compartment 4

A

extensor digitorum and extensor indicis

73
Q

dorsal wrist compartment 5

A

extensor digiti minimi

74
Q

dorsal wrist compartment 6

A

extensor carpi ulnaris

75
Q

what compartments is the anatomical snuffbox between

A

1 and 3

76
Q

de quervains tenosynovitis what compartment is involved

A

cumulative trauma/ inflammation of the tendon covering of the 1st dorsal compartment (acute)
“texting thumb”

77
Q

tenodesis

A

passive finger flexion created by active wrist extension (wrist extension causes fingers to close)
spinal cord injury: they have C6 but nothing down

78
Q

smith fracture

A

volar (palmar) displacement of distal radius

79
Q

colles’ fracture

A

dorsal displacement of distal radius

80
Q

which fracture is more common: smith or colles’

A

colle’s

81
Q

listers tubercle is on the….. side

A

dorsal

82
Q

which side of the wrist would get a plate after a fracture

A

volar side because no listers tubercle (its flatter)

83
Q

what is most commonly fractures in a FOOSH injury

A

scaphoid

Anatomy E2 (10 decks)

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