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Muscle's O.I.A.I. & A.N with Images > Muscles of the Upper Limb > Flashcards

Muscles of the Upper Limb Flashcards

1
Q
A

abductor digiti minimi (hand)

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2
Q

Origin

A

abductor digiti minimi (hand)

pisiform

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3
Q

Insertion

A

abductor digiti minimi (hand)

base of the proximal phalanx of the 5th digit on its ulnar side

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4
Q

Action

A

abductor digiti minimi (hand)

abducts the 5th digit

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5
Q

Innervation

A

abductor digiti minimi (hand)

deep branch of the ulnar nerve

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6
Q

Artery

A

abductor digiti minimi (hand)

ulnar artery

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7
Q

Notes

A

abductor digiti minimi (hand)

abductor digiti minimi, flexor digiti minimi brevis, and oppenens digiti minimi are located in the hypothenar compartment of the hand

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8
Q
A

abductor pollicis brevis

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9
Q

Origin (3)

A

abductor pollicis brevis

  1. flexor retinaculum
  2. scaphoid
  3. trapezium
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10
Q

Insertion

A

abductor pollicis brevis

base of the proximal phalanx of the first digit

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11
Q

Action

A

abductor pollicis brevis

abducts thumb

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12
Q

Innervation

A

abductor pollicis brevis

branch of median nerve

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13
Q

Artery

A

superficial palmar branch of the radial artery

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14
Q

Notes

A

abductor pollicis brevis

abductor pollicis brevis, flexor pollicis brevis, and oppenens pollicis are lcoated in the THENAR COMPARTMENT of the hand

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15
Q
A

abductor pollicis longus

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16
Q

Origin (3)

A

abductor pollicis longus

  1. middle 1/3 of the posterior surface of the radius
  2. interosseous membrane
  3. mid-portion of posterolateral ulna
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17
Q

Insertion

A

abductor pollicis longus

radial side of the base of the first metacarpal

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18
Q

Action

A

abductor pollicis longus

abducts the thumb at CARPOMETACARPAL JOINT

AKA CMC JOINT

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19
Q

Innervation

A

abductor pollicis longus

radial nerve, deep branch

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20
Q

Artery

A

abductor pollicis longus

posterior interosseous artery

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21
Q

Notes

A

abductor pollicis longus

the tendons of abductor pollicis longus and extensor pollicis brevis make the LATERAL BORDER of the ANATOMICAL SNUFFBOX

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22
Q
A

adductor pollicis

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23
Q

Origin (2)

A

adductor pollicis

oblique head: capitiate and base of the 2nd and 3rd metacarpals

transverse head: shaft of the 3rd metacarpal

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24
Q

Insertion

A

adductor pollicis

base of the proximal phalanx of the thumb

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25
Q

Action

A

adductor pollicis

adducts the thumb

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26
Q

Innervation

A

adductor pollicis

ulnar nerve, deep branch

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27
Q

Artery

A

adductor pollicis

deep palmar arterial arch

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28
Q

Notes

A

adductor pollicis

deep palmar arch an deep ulnar nerve pass between the two heads of adductor pollicis, which is in the adductor-interosseous compartment

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29
Q
A

anconeus

30
Q

Origin

A

anconeus

lateral epicondyle of the humerus

31
Q

Insertion

A

anconeus

lateral side of the olecranon and the upper one-forth of the ulna

32
Q

Action

A

anconeus

extends the forearm

33
Q

Innervation

A

anconeus

nerve to anconeus, from the RADIAL NERVE

34
Q

Artery

A

anconeus

interosseous recurrent artery

35
Q

Note

A

anconeus

greek for elbow is anconeus

36
Q
A

biceps brachii

37
Q

Origin (2)

A

biceps brachii

  1. short head: tip of the coracoid process of the scapula
  2. long head: supraglenoid tubercle of the scapula
38
Q

Insertion

A

biceps brachii

tuberosity of the radius

39
Q

Actions (3)

A

biceps brachii

  1. flexes the forearm
  2. flexes arm (long head)
  3. supinates
40
Q

Innervation

A

biceps brachii

musculocuatneous nerve C5 C6

41
Q

Artery

A

biceps brachii

brachial artery

42
Q

Note

A

biceps brachii

a powerful supinator only if the elbow is flexed

43
Q
A

brachialis

44
Q

Origins (2)

A

brachialis

  1. anterior surface of the lower 1/2 of the HUMERUS
  2. associated intermuscular SEPTA
45
Q

Insertion

A

brachialis

coronoid process of the ulna

46
Q

Action

A

brachialis

flexes the forearm

47
Q

Innervation

A

brachialis

musculocutaneous nerve C5 C6

48
Q

Artery (2)

A

brachialis

  1. brachial artery
  2. radial recurrent artery
49
Q

Note

A

brachialis

powerful flexor

50
Q
A

brachioradialis

51
Q

Origin

A

brachioradialis

upper 2/3 of the lateral SUPRACONDYLAR RIDGE of the humerus

52
Q

Insertion

A

brachioradialis

lateral side of the base of the styloid process of the radius

53
Q

Action (2)

A

brachioradialis

  1. flexes the elbow
  2. assists in pronation & supination
54
Q

Innervation

A

brachioradialis

radial nerve

55
Q

Artery

A

brachioradialis

radial recurrent artery

56
Q

Note

A

brachioradialis

although bradioradialis is innervated by the nerve for extensors (RADIAL), its primary action is elbow flexion; the neutral position of this muscle is half way between supination and pronation (elbow flexed, thumbs up)

57
Q
A

coracobrachialis

58
Q

Origin

A

coracobrachialis

coracoid process of the scapula

59
Q

Insertion

A

coracobrachialis

medial side of the humerus at mid-shaft

60
Q

Action (2)

A

coracobrachialis

  1. flexes the arm
  2. adducts the arm
61
Q

Innervation

A

coracobrachialis

musculocutaneous nerve C5 C6

62
Q

Artery

A

coracobrachialis

brachial artery

63
Q

Notes

A

coracobrachialis

the musculocutaneous nerve passes through the CORACOBRACHIALIS muscle to reach the other arm flexor muscles (BICEPS BRACHII and BRACHIALIS)

64
Q
A

deltoid

65
Q

Origin (3)

A

deltoid

  1. lateral 1/3 of the clavicle
  2. acromion
  3. lower lip of the crest of the spine of the scapula
66
Q

Insertion

A

deltoid

deltoid tuberosity of the humerus

67
Q

Action (3)

A

deltoid

  1. abducts arm
  2. (anterior fibers) flex & medially rotate the arm
  3. (posterior fibers) extend & laterally rotate the arm
68
Q

Innervation

A

deltoid

axillary nerve C5 C6 from the posterior cord of the brachial plexus

69
Q

Artery

A

deltoid

posterior circumflex humeral artery

70
Q

Note

A

deltoid

the deltoid muscle is the principle abductor of the arm but due to poor mechanical advantage it annot initate this action:

it is assisted by the SUPRASPINATUS muscle

71
Q
A

Muscle's O.I.A.I. & A.N with Images (2 decks)

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