Brainscape's Knowledge GenomeTM

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


See full index

S1 Anatomy > Wrist and Hand Muscles > Flashcards

Wrist and Hand Muscles Flashcards

1
Q

muscles of the thenar eminence

A

abductor pollicis brevis
flexor pollicis brevis
opponens pollicis
adductor pollicis

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

abductor pollicis brevis

-origin

A

flexor retinaculum

tubercles of scaphoid and trepezium

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

abductor pollicis brevis

-insertion

A

lateral side of base of proximal phalanx of thumb

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

abductor pollicis brevis

-action

A

thumb abduction

helps with thumb opposition

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

abductor pollicis brevis

-innervation

A

recurrent branch of median nerve (C8, T1)

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

flexor pollicis brevis

-origin

A 
superficial head
-flexor retinaculum
-tubercle of trapezium
deep head
-floor of carpal tunnel
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

flexor pollicis brevis

-insertion

A

lateral side of base of proximal phalanx of thumb

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

flexor pollicis brevis

-action

A

flexes thumb

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

flexor pollicis brevis

-innervation

A

superficial head
-recurrent branch of median nerve (C8, T1)
deep head
-deep branch of ulnar nerve (C8, T1)

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

opponens pollicis

-origin

A

flexor retinaculum

tubercle of trapezium

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

opponens pollicis

-insertion

A

lateral side of base of proximal phalanx of thumb

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

opponens pollicis

-actions

A

opposes thumb toward center of palm

rotates it medially

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

opponens pollicis

-innervation

A

recurrent branch of median nerve (C8, T1)

also possibly deep branch of ulnar nerve

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

adductor pollicis

-origin

A 
oblique head
-bases of metacarpal 2, 3
-capitate
-adjacent carpal bones
transverse head
-anterior surface of 3rd metacarpal
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

adductor pollicis

-insertion

A

medial side of base of proximal phalanx of thumb

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

adductor pollicis

-actions

A

adducts thumb toward middle digit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

adductor pollicis

-innervation

A

deep branch of ulnar nerve (C8, T1)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

abductor digiti minimi

-origin

A

pisiform bone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

abductor digiti minimi

-insertion

A

medial side of base of proximal phalanx of digit 5

20
Q

abductor digiti minimi

-action

A

abducts digit 5

21
Q

abductor digiti minimi

-innervation

A

deep branch of ulnar nerve (C8, T1)

22
Q

flexor digiti minimi brevis

-origin

A

hook of hamate

flexor retinaculum

23
Q

flexor digiti minimi brevis

-insertion

A

medial side of base of proximal phalanx of digit 5

24
Q

flexor digiti minimi brevis

-action

A

flexes proximal phalanx of digit 5

25
Q

flexor digiti minimi brevis

-innervation

A

deep branch of ulnar nerve (C8, T1)

26
Q

opponens digiti minimi

-origin

A

hook of hamate

flexor retinaculum

27
Q

opponens digiti minimi

-insertion

A

medial border of 5th metacarpal

28
Q

opponens digiti minimi

-action

A

draws 5th metacarpal bone anteriorly and rotates it to bring digit 5 into opposition to thumb

29
Q

opponens digiti minimi

-innervation

A

deep branch of ulnar nerve (C8, T1)

30
Q

muscles of hypothenar eminence

A

abductor digiti minimi
flexor digiti minimi brevis
opponens digiti minimi

31
Q

lumbricals 1 and 2

-origin

A

lateral two tendons of flexor digitorum profundus (index and middle finger)

32
Q

lumbricals 1 and 2

-insertion

A

lateral sides of extensor expansions of digits 2 and 3

33
Q

lumbricals 1 and 2

-action

A

flex digits at MCP joint

extend IP joints

34
Q

lumbricals 1 and 2

-innervation

A

median nerve (C8, T1)

35
Q

lumbricals 3 and 4

-origin

A

medial two tendons of flexor digitorum profundus (ring and little finger)

36
Q

lumbricals 3 and 4

-insertion

A

lateral sides of extensor expansions of digits 4 and 5

37
Q

lumbricals 3 and 4

-action

A

flex digits at MCP joint

extend IP joints

38
Q

lumbricals 3 and 4

-innervation

A

deep branch of ulnar nerve (C8, T1)

39
Q

dorsal interossei 1-4

-origin

A

adjacent sides of two metacarpal bones

40
Q

dorsal interossei 1-4

-insertion

A

extensor expansions and bases of proximal phalanges of digits 2-4
middle finger has 2 insertions

41
Q

dorsal interossei 1-4

-action

A

abduct digits

assist lumbricals in extension at the IP joints

42
Q

dorsal interossei 1-4

-innervation

A

deep branch of ulnar nerve (C8, T1)

43
Q

palmar interossei 1-3

-origin

A

palmar surfaces of 2nd, 4th, and 5th metacarpals

44
Q

palmar interossei 1-3

-insertion

A

extensor expansions and bases of proximal phalanges of digits 2, 4, 5

45
Q

palmar interossei 1-3

-action

A

adduct digits

assist lumbricals in flexion at the MCP joint

46
Q

palmar interossei 1-3

-innervation

A

deep branch of ulnar nerve (C8, T1)

47
Q

short muscles of the hand

A

lumbricals 1-4
dorsal interossei 1-4
palmar interossei 1-3

S1 Anatomy (31 decks)

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