Brainscape's Knowledge GenomeTM

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


See full index

Gross Anatomy - Unit 2 > Intrinsic Muscles of Hand > Flashcards

Intrinsic Muscles of Hand Flashcards

0
Q

Insertion of opponens pollicis

A

Lateral side of 1st metacarpal

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

Origin of the opponens pollicis

A

Flexor retinaculum and tubercles of scaphoid and trapezium

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

Innervation of opponens pollicis

A

Recurrent branch of median nerve (C8, T1)

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

Action of opponens pollicis

A

To oppose thumb, it draws 1st metacarpal medially to center of palm and rotates it medially

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

Origin of abductor pollicis brevis

A

Flexor retinaculum and tubercles of scaphoid and trapezium

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

Insertion of abductor pollicis brevis

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
6
Q

Innervation of abductor pollicis brevis

A

Recurrent branch of median nerve (C8, T1)

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

Action of abductor pollicis brevis

A

Abducts thumb

Helps oppose it

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

Origin of flexor pollicis brevis

Superficial head and Deep head

A

Flexor retinaculum and tubercles of scaphoid and trapezium

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

Insertion of flexor pollicis brevis

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
10
Q

Innervation of flexor pollicis brevis

A

Recurrent branch of median nerve (C8, T1)

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

Action of flexor pollicis brevis

A

Flexes thumb

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

Origin of adductor pollicis

Oblique head and transverse head

A

Oblique head: Bases of 2nd and 3rd metacarpals, capitate, adjacent carpals
Transverse head: Anterior surface of shaft of 3rd metacarpal

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

Insertion of adductor pollicis

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
14
Q

Innervation of adductor pollicis

A

Deep branch of ulnar nerve (C8, T1)

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

Action of adductor pollicis

A

Adducts thumb toward lateral border of palm

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

Origin of abductor digiti minimi

A

Pisiform

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

Insertion of abductor digiti minimi

A

Medial side of base of proximal phalanx of 5th finger

18
Q

Innervation of abductor digiti minimi

A

Deep branch of ulnar nerve (C8, T1)

19
Q

Action of abductor digit minimi

A

Abducts 5th finger

Assists in flexion of its proximal phalanx

20
Q

Origin of flexor digit minimi brevis

A

Hook of hamate and flexor retinaculum

21
Q

Insertion of flexor digiti minimi brevis

A

Medial side of base of proximal phalanx of 5th finger

22
Q

Innervation of flexor digiti minimi brevis

A

Deep branch of ulnar nerve (C8, T1)

23
Q

Action of flexor digiti minimi brevis

A

Flexes proximal phalanx of 5th finger

24
Q

Origin of opponens digiti minimi

A

Hook of hamate and flexor retinaculum

25
Q

Insertion of opponens digiti minimi

A

Medial border of 5th metacarpal

26
Q

Innervation of opponens digiti minimi

A

Deep branch of ulnar nerve (C8, T1)

27
Q

Action of opponens digiti minimi

A

Draws 5th metacarpal anterior and rotates it, bringing 5th finger into opposition with thumb

28
Q

Origin of lumbricals (1 and 2)

A

Lateral two tendons of flexor digitorum profundus (as unipennate muscles)

29
Q

Insertion of lumbricals (1 and 2)

A

Lateral sides of extensor expansions of 2nd-5th fingers

30
Q

Innervation of lumbricals (1 and 2)

A

Median nerve (C8, T1)

31
Q

Action of lumbricals

A

Flex metacarpophalangeal joints

Extend interphalangeal joints of 2nd-5th fingers

32
Q

Origin of lumbricals (3 and 4)

A

Medial three tendons of flexor digitorum profundus (as bipennate muscles)

33
Q

Insertion of lumbricals (3 and 4)

A

Lateral sides of extensor expansions of 2nd-5th fingers

34
Q

Innervation of lumbricals (3 and 4)

A

Median nerve (C8, T1)

35
Q

Origin of dorsal interossei, 1-4

A

Adjacent sides of two metacarpals (as bipennate muscles)

36
Q

Insertion of dorsal interossei, 1-4

A

Bases of proximal phalanges, extensor expansions of 2nd-4th fingers

37
Q

Innervation of dorsal interossei, 1-4

A

Deep branch of ulnar nerve (C8, T1)

38
Q

Action of dorsal interossei, 1-4

A

Abduct 2nd-4th fingers from axial line

Act with lumbricals in flexing metacarpophalangeal joints and extending interphalangeal joints

39
Q

Origin of palmar interossei, 1-3

A

Palmar surfaces of 2nd, 4th, and 5th metacarpals (as unipennate muscles)

40
Q

Insertion of palmar interossei, 1-3

A

Bases of proximal phalanges; extensor expansions of 2nd, 4th, and 5th fingers

41
Q

Innervation of palmar interossei, 1-3

A

Deep branch of ulnar nerve (C8, T1)

42
Q

Action of palmar interossei, 1-3

A

Adduct 2nd, 4th, and 5th fingers toward axial line

Assist lumbricals in flexing metacarpophalangeal joints and extending interphalangeal joints

Gross Anatomy - Unit 2 (11 decks)

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