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Anatomy 2 > Brachium Muscles > Flashcards

Brachium Muscles Flashcards

OINAs

1
Q

Subclavius Action

A

depresses and anchors clavicle

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2
Q

Subclavius PA

A

junction of 1st rib and its costal cartilage

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3
Q

Subclavius DA

A

inferior surface of middle surface of clavicle

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4
Q

Subclavius Innervation

A

nerve to subclavius (C5, C6)

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5
Q

Anterior Scalene Action

A

flex neck laterally
elevate 1st rib during forced inhalation

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6
Q

Anterior Scalene SA

A

TP C3-C6

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7
Q

Anterior Scalene IA

A

1st rib

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8
Q

Anterior Scalene Innervation

A

cervical spinal nerve C4-C6

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9
Q

Middle Scalene Action

A

flex neck laterally
elevate 1st rib during forced inhalation

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10
Q

Middle Scalene SA

A

TP C5-C7

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11
Q

Middle Scalene IA

A

1st rib

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12
Q

Middle Scalene Innervation

A

anterior (ventral) rami of cervical spinal nerves

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13
Q

Posterior Scalene Action

A

flex neck laterally
elevate 2nd rib during forced inhalation

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14
Q

Posterior Scalene SA

A

TP C5-C7 (posterior tubercles)

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15
Q

Posterior Scalene IA

A

2nd rib

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16
Q

Posterior Scalene Innervation

A

anterior (ventral) rami of cervical spinal nerves C7 and C8

17
Q

Biceps Brachii Action

A

supinate forearm
flex forearm
short head: resists dislocation of shoulder

18
Q

Biceps Brachii PA

A
  • short head: coracoid process
  • long head: supraglenoid tubercle, labrum
19
Q

Biceps Brachii DA

A

radial tuberosity, fascia of forearm via bicipital aponeurosis

20
Q

Biceps Brachii Innervation

A

musculocutaneous nerve (C5, C6, C7)

21
Q

Coracobrachialis Action

A

flex shoulder (GH joint)
adduct shoulder (GH joint)
resists dislocation of shoulder

22
Q

Coracobrachialis PA

A

coracoid process

23
Q

Coracobrachialis DA

A

middle humerus

24
Q

Coracobrachialis Innervation

A

musculocutaneous nerve (C5, C6, C7)

25
Q

Brachialis Action

A

flex elbow in all positions (humerolnar joint)

26
Q

Brachialis PA

A

distal anterior humerus

27
Q

Brachialis DA

A

ulnar tuberosity, coronoid process of ulna

28
Q

Brachialis Innervation

A

musculocutaneous nerve (C5, C6), small branch from radial (C5, C7)

29
Q

Brachioradialis Action

A
  • flex elbow (humerolnar joint) in midpronated position
  • assists to pronate and supinate forearm when these movements are resisted/from end range (humeroradial joint)
30
Q

Brachioradialis PA

A

lateral supracondylar ridge of humerus

31
Q

Brachioradialis DA

A

distal lateral radius (proximal to styloid process)

32
Q

Brachioradialis Innervation

A

radial nerve (C5, C6, C7)

33
Q

Triceps Brachii Action

A

chief extensor of forearm/elbow
long head: resists dislocation of humerus (especially important during adduction)

34
Q

Triceps Brachii PA

A
  • long head: infraglenoid tubercle
  • lateral head: posterior humerus, superior (lateral) to radial groove
  • medial head: posterior humerus, inferior (medial) to radial groove
35
Q

Triceps Brachii DA

A

olecranon of ulna

36
Q

Triceps Brachii Innervation

A

radial nerve (C6, C7, C8)

Anatomy 2 (11 decks)

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