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Anatomy T2 > sept 6 > Flashcards

sept 6 Flashcards

1
Q

supinator, extensor indicis, abductor pollicis longus, extensor pollicis brevis, and extensor pollicis longus are all located in which layer of the posterior forearm?

A

deep

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2
Q

proximal attachments of the supinator

A

lateral epicondyle, supinator fossa/crest of the ulna

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3
Q

distal attachment of the supinator

A

anterior/lateral/posterior parts of proximal radius

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4
Q

action of supinator

A

supinator of radioulnar joints

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5
Q

proximal attachment of extensor indicis

A

posterior mid-distal forearm

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6
Q

distal attachment of extensor indicis

A

extensor expansion of the 2nd digit

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7
Q

action of extensor indicis

A

extends the 2nd digit

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8
Q

proximal attachment of abductor pollicis longus

A

posterior mid-distal forearm

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9
Q

distal attachment of abductor pollicis longus

A

base of MC1

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10
Q

action of abductor pollicis longus

A

CMC1 abduction

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11
Q

proximal attachment of extensor pollicis brevis

A

posterior mid-distal forearm

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12
Q

distal attachment of extensor pollicis brevis

A

base of the proximal phalanx of the thumb

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13
Q

actions of extensor pollicis brevis

A

extension of MCP1 and CMC1

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14
Q

proximal attachment of extensor pollicis longus

A

posterior mid-distal forearm

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15
Q

distal attachment of extensor pollicis longus

A

base of the distal phalanx of the thumb

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16
Q

actions of extensor pollicis longus

A

extension of IP1 and MCP1

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17
Q

where is the anatomical snuffbox

A

lateral aspect at the base of the thumb

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18
Q

what makes up the anterior border of the anatomical snuffbox?

A

abductor pollicis longus and extensor pollicis brevis

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19
Q

what makes up the posterior border of the anatomical snuffbox?

A

extensor pollicis longus

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20
Q

what bone is at the floor of the anatomic snuffbox?

A

scaphoid

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21
Q

opponens pollicis, abductor pollicis brevis, and flexor pollicis brevis are classified as what muscles?

A

thenar muscles

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22
Q

action of opponens pollicis

A

flex and rotate the thumb medially

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23
Q

action of abductor pollicis brevis

A

abduct the thumb, assists opposition

24
Q

action of flexor pollicis brevis

A

thumb flexion and assists opposition

25
Q

opponens digiti minimi, abductor digiti minimi, flexor digiti minimi brevis, and palmaris brevis are classified as what muscles?

A

hypothenar muscles

26
Q

action of opponens digiti minimi

A

draws MC5 anteriorly and rotates it to oppose the thumb

27
Q

action of abductor digiti minimi

A

abducts 5th finger

28
Q

action of flexor digiti minimi brevis

A

flexes proximal phalanx of the 5th digit

29
Q

actions of palmaris brevis

A

wrinkles the skin on medial palm, covers/protects ulnar nerve and artery

30
Q

adductor pollicis, lumbricals, dorsal interossei, and palmer interossei are classified as what muscles?

A

deep

31
Q

action of adductor pollicis

A

adducts the thumb

32
Q

action of lumbricals

A

MCP flexion, IP extension

33
Q

action of dorsal interossei

A

abducts digits

34
Q

action of palmar interossei

A

adducts digits

35
Q

which ribs are “typical”

A

2-10

36
Q

what characteristics make a typical rib

A

head, neck, tubercle, shaft

37
Q

rib structure with 2 facets (superior and inferior) that articulate with 2 vertebral bodies

A

typical rib head

38
Q

rib structure between the head and the tubercle

A

neck

39
Q

rib structure, articular facet that articulates with a TVP

A

tubercle

40
Q

rib structure, has an angle and a costal groove for the costal nerve

A

shaft

41
Q

what is the longest rib?

A

7

42
Q

which ribs are atypical

A

1, 11, 12

43
Q

what characteristics man an atypical rib

A

articulate with only 1 vertebral body

44
Q

how does a rib shaft project?

A

posteriorly, inferiorly, and laterally until it gets to the rib angle, then curves anteriorly

45
Q

the greatest change in the curvature of the rib

A

angle

46
Q

structures on the vertebral bodies, most vertebra have superior and inferior, which articulate with the heads of ribs

A

costal facets

47
Q

how are typical ribs numbered in relation to vertebral bodies?

A

superior costal facet articulates with the head of the rib of the same number

48
Q

the articular facet on the tubercle of a typical rib articulates with what on the corresponding vertebral body?

A

transverse costal facet

49
Q

how do the transverse costal facet-articular facet relationship correlate with typical rib/vertebra number

A

they are the same

50
Q

structure of rib 1 where the anterior scalene muscle attaches

A

scalene tubercle

51
Q

the grooves for the subclavian artery and vein are located on which rib?

A

rib 1

52
Q

typical ribs articulate with what kind of facet on vertebral bodies?

A

demi-facets

53
Q

atypical ribs articulate with what kind of facet on vertebral bodies

A

complete facets

54
Q
A
55
Q
A

Anatomy T2 (15 decks)

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