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CAPS 391 (15) Muscles: Upper Limb > Forearm > Flashcards

Forearm Flashcards

1
Q

What are the two muscular compartments of the forearm?

A

1) anterior compartment (flexors)

2) posterior compartment (extensors)

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2
Q

What are the two muscular compartments of the forearm divided by?

A

interosseous membrane

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3
Q

What are the muscles of the anterior compartment of the forearm?

A

1) pronator teres
2) flexor carpi radialis
3) flexor digitorum superficialis
4) flexor digitorum profundus
5) flexor pollicis longus

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4
Q

O: pronator teres

A

medial epicondyle of humerus

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5
Q

I: pronator teres

A

shaft of radius

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6
Q

F: pronator teres

A

prime mover for pronation of the forearm

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7
Q

N: pronator teres

A

median nerve

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8
Q

O: flexor carpi radialis

A

medial epicondyle of humerus

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9
Q

I: flexor carpi radialis

A

second and third metacarpal bones

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10
Q

F: flexor carpi radialis

A

flexor of the wrist, abduction of the wrist

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11
Q

N: flexor carpi radialis

A

median nerve

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12
Q

O: flexor digitorum superficialis

A

medial epicondyle of humerus

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13
Q

I: flexor digitorum superficialis

A

tendons attach to middle phalanx of fingers 2 to 5

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14
Q

F: flexor digitorum superficialis

A

flexion of the metacarpal phalanges (MCP joints) and proximal interphalangeal joints (PIP joints)

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15
Q

N: flexor digitorum superficialis

A

median nerves

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16
Q

O: flexor digitorum profundus

A

ulna

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17
Q

I: flexor digitorum profundus

A

tendon attaches to distal phalanx of fingers 2 to 5

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18
Q

F: flexor digitorum profundus

A

prime mover for flexion of wrist and flexion of all joints in the fingers

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19
Q

N: flexor digitorum profundus

A

medial half: ulnar nerve

lateral half: median nerve

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20
Q

O: flexor pollicis longus

A

radius

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21
Q

I: flexor pollicis longus

A

tendon attaches to distal phalanx of the thumb

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22
Q

F: flexor pollicis longus

A

prime mover for flexion of the thumb

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23
Q

N: flexor pollicis longus

A

median nerve

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24
Q

What is the primary nerve of the anterior compartment muscles of the forearm?

A

median nerve (some ulnar nerve)

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25
Q

What is the flexor retinaculum and what is its function?

A

layer of dense connective tissue, holds the tendon of flexor muscles in place at the wrist and increases their efficiency

26
Q

What are the muscles of the anterior compartment of the forearm that are part of the superficial layer?

A

1) Pronator teres
2) Flexor carpi radialis
3) Flexor digitorum superficialis

27
Q

What are the muscles of the anterior compartment of the forearm that are part of the deep layer?

A

1) Flexor digitorum profundus

2) Flexor pollicis longus

28
Q

What are the muscles of the posterior compartment of the forearm?

A

1) Brachioradialis
2) Extensor digitorum
3) Extensor carpi ulnaris
4) Supinator
5) Extensor indicis
6) Abductor pollicis longus

29
Q

What is the primary nerve of the posterior compartment muscles of the forearm?

A

radial nerve only

30
Q

O: Brachioradialis

A

lateral epicondyle of humerus

31
Q

I: Brachioradialis

A

styloid process of radius

32
Q

F: Brachioradialis

A

flexion of elbow

33
Q

N: Brachioradialis

A

radial nerve

34
Q

O: Extensor digitorum

A

lateral epicondyle of humerus

35
Q

I: Extensor digitorum

A

middle and distal phalanges of fingers 2 to 5

36
Q

F: Extensor digitorum

A

1) prime mover for extension of the fingers

2) primer mover for extension of the wrist

37
Q

N: Extensor digitorum

A

radial nerve

38
Q

O: Extensor carpi ulnaris

A

lateral epicondyle of humerus

39
Q

I: Extensor carpi ulnaris

A

5th metacarpal bone

40
Q

F: Extensor carpi ulnaris

A

adduction of the wrist

41
Q

N: Extensor carpi ulnaris

A

radial nerve

42
Q

O: Supinator

A

ulna and humerus

43
Q

I: Supinator

44
Q

F: Supinator

A

supination of the forearm

45
Q

N: Supinator

A

radial nerve

46
Q

O: Extensor indicis

47
Q

I: Extensor indicis

A

middle of index finger

48
Q

F: Extensor indicis

A

extension of index finger

49
Q

N: Extensor indicis

A

radial nerve

50
Q

O: Abductor pollicis longus

51
Q

I: Abductor pollicis longus

A

tendon to first metacarpal bone

52
Q

F: Abductor pollicis longus

A

prime mover for abduction of the thumb

53
Q

N: Abductor pollicis longus

A

radial nerve

54
Q

What are the muscles of the posterior compartment of the forearm that are part of the superficial layer?

A

1) Brachioradialis
2) Extensor digitorum
3) Extensor carpi ulnaris

55
Q

What are the muscles of the posterior compartment of the forearm that are part of the deep layer?

A

1) Supinator
2) Extensor indicis
3) Abductor pollicis longus

56
Q

Prime mover for pronation of forearm

A

Pronator teres

57
Q

Prime mover for flexion of wrist and flexion of all joints in the fingers

A

Flexor digitorum profundus

58
Q

Prime mover for flexion of the thumb

A

Flexor pollicis longus

59
Q

Prime mover for extension of the fingers

A

Extensor digitorum

60
Q

Primer mover for extension of the wrist

A

Extensor digitorum

61
Q

Prime mover for abduction of the thumb

A

Abductor pollicis longus

CAPS 391 (15) Muscles: Upper Limb (4 decks)

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