Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

COM - MSK > Wrist, Hand, & Joints > Flashcards

Wrist, Hand, & Joints Flashcards

1
Q

what does the ulnar nerve innervate?

A

hypothenar muscles
3rd and 4th lumbricals
PAD
DAB

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what does the deep branch of ulnar n. innervate?

A 
adductor pollicis (transverse and oblique heads)
deep portion of flexor pollicis brevis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what does the recurrent branch of median nerve innervate?

A

thenar muscles

1st and 2nd lumbricals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what does the superficial ulnar n. innervate?

A

palmaris brevis m.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

where is the median nerve located?

what nerve is easily injured and superficially located?

A

deep to the palmar aponeurosis

recurrent branch of median n.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is the origin of the superficial palmar arch?

what does the arch continue as?

A

ulnar a.

common digital a. then proper palmar digital a.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is the primary source of the deep palmar arch?

what does the primary source continue as?

A

radial a.

princeps pollicus a. then radialis indicis a.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what makes up the thenar eminence from lateral to medial (anatomical position)

A

Abductor pollicis brevis
Flexor pollicis brevis (sup. and deep heads)
Opponens pollicis

Adductor pollicis (transverse and oblique heads) –> NOT PART OF THENAR EMINENCE

ALL FOR ONE AND

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what makes up the hypothenar eminence lateral to medial?

A

Opponens digiti minimi
Flexor digiti minimi
Abductor digiti minimi

ONE FOR ALL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is the innervation of thenar muscles?

blood supply?

A

recurrent branch of median n. (C8, T1)

radial a.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

opponens pollicis action

A

oppose and medially rotate thumb

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

abductor pollicis brevis action

A

abduct thumb, aids opposition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

flexor pollicis brevis action

innervations of deep head?

A

flex thumb

deep branch ulnar n.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

adductor pollicis action

innervation

A

adduct thumb to lateral border

deep branch ulnar n.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

hypothenar m. innervation

blood supply?

A

ulnar n. (C8, T1)

ulnar a.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Opponens digiti minimi action

A

bring 5th metacarpal ant. and rotates it to oppose thumb

17
Q

flexor digiti minimi action

A

flex prox phalanx of 5th digit

18
Q

abductor digiti minimi action

A

abduct 5th digit, flex prox phalanx

19
Q

where are the 1st and 2nd lumbricals attached?

innervation?

blood supply

A

lateral 2 tendons of FDP

median n.

radialis indices and superficial palmar arch

20
Q

where do the 3rd and 4th lumbricals attach?

innervation?

blood?

action?

A

medial 3 tendons of FDP

deep branch ulnar n.

sup. palmar arch and dorsal carpal arch

flex MCP joints, extend IP joints of digits 2-5

21
Q

PADS action?

how many?

A

adduct digits 2,4,5

3

22
Q

DABS action

how many

A

abduct 2,3,4 and assist lumbricals

4

23
Q

innervation of PAD and DAB?

A

ulnar n.

24
Q

shortening and thickening of palmar fascia that pulls the 4th and 5th digits into partial flexion is what?

A

Dupuytren’s Contracture

hereditary

25
Q

what is tensosynovitis?

what causes it?

A

inflammation of tendon and synovial sheat

infections in digital synovial sheath

26
Q

what is special about 5th digit tensosynovitis?

A

infection can spread into carpal tunnel and forearm, bc sheath continuous with ulnar bursa

27
Q

what is the wrist joint called?

what is the articulation bw?

A

radiocarpal joint

radius bw scaphoid and lunate

28
Q

what is the joint called bw prox carpal row and distal carpal row?

A

midcarpal joint

29
Q

extension of the wrist joint involves what joints and %’s?

A

67% radiocarpal

33% midcarpal

30
Q

flexion of the wrist joint involves what joints and %’s?

A

60% midcarpal

40% radiocarpal

31
Q

what injury is common when extended?

flexed?

A

FOOSH

carpal fracture

32
Q

degrees of abduction?

adduction?

A

15-25

30-45

33
Q

what ligaments support the radiocarpal joint?

A

radial collateral
ulnar collateral
palmar radiocarpal
palmar radioulnar

34
Q

what muscles are responsible for the power grip?

A

flexor digitorum profundus

flexor pollicus longus

COM - MSK (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions