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PCMT Year 2- Mod 5 > Muscles > Flashcards

Muscles Flashcards

1
Q

Subclavius Innervation

A

subclavian nerve

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2
Q

subclavius origin

A

1st rib and cartilage

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3
Q

subclavius insertion

A

inferior surface of the middle 1/3 of clavicle

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4
Q

subclavius actions

A

depress the clavicle and draw it anteriorly
elevate the 1st rib during inhalation
stabilize the sternoclavicular joint

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5
Q

serratus anterior innervation

A

long thoracic nerve

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6
Q

serratus anterior origin

A

external surfaces of upper 8 or 9 ribs

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7
Q

serratus anterior insertion

A

anterior surface of the medial border of the scapula

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8
Q

serratus anterior actions

A

w/ origin fixed:
abduct
upwardly rotate
depress scapulothoracic joint
hold medial border of scap against the ribcage

w/ scap fixed:
may act to elevate the thorax during forced inhalation

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9
Q

coracobrachialis innervation

A

musculocutaneous nerve

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10
Q

coracobrachialis origin

A

coracoid process of the scapula

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11
Q

coracobrachialis insertion

A

medial surface of the mid-humeral shaft

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12
Q

coracobrachialis actions

A

flex the glenohumeral joint
Adduct the glenohumeral joint

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13
Q

Teres Major innervation

A

lower subscapular nerve

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14
Q

teres Major origin

A

inferior angle and lower 1/3 of the lateral border of the scapula

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15
Q

teres major insertion

A

crest of the lesser tubercle of the humerus

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16
Q

teres major actions

A

extend the glenohumeral joint
adduct the glenohumeral joint
medially rotate the glenohumeral joint

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17
Q

supraspinatus innervation

A

suprascapular nerve

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18
Q

supraspinatus origin

A

supraspinous fossa of the scapula

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19
Q

supraspinatus insertion

A

greater tubercle of the humerus

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20
Q

supraspinatus actions

A

abduct the glenohumeral joint
stabilize the head of the humerus in the glenoid cavity

21
Q

infraspinatus innervation

A

suprascapular nerve

22
Q

infraspinatus origin

A

infraspinous fossa of the scapula

23
Q

infraspinatus insertion

A

greater tubercle of the humerus

24
Q

infraspinatus actions

A

adduct the glenohumeral joint
laterally rotate the glenohumeral joint
stabilize the head of the humerus in the glenoid cavity

25
Q

teres minor innervation

A

axillary nerve

26
Q

teres minor origin

A

upper 2/3 of lateral border of the scapula

27
Q

teres minor insertion

A

greater tubercle of the humerus

28
Q

teres minor actions

A

laterally rotate the glenohumeral joint
adduct the glenohumeral joint
stabilize the head of the humerus in the glenoid cavity

29
Q

subscapularis innervation

A

upper and lower subscapular nerve

30
Q

subscapularis origin

A

subscapular fossa of the scapula

31
Q

subscapularis insertion

A

lesser tubercle of the humerus

32
Q

subscapularis actions

A

medially rotate the glenohumeral joint
stabilize the head of the humerus in the glenoid cavity

33
Q

Latissimus Dorsi innervation

A

thoracodorsal nerve

34
Q

latissimus dorsi Origin

A

inferior angle of scapula, spinous processes of the last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar fascia and posterior iliac crest

35
Q

latissimus dorsi insertion

A

intertubercular groove of the humerus

36
Q

latissimus dorsi actions

A

extend the glenohumeral joint
adduct the glenohumeral joint
medially rotate the glenohumeral joint

37
Q

Trapezius innervation

A

spinal portion of the cranial nerve 11, and ventral ramus C2,3,4

38
Q

trapezius origin

A

external occipital protuberance, medial portion of the superior nuchal line of the occiput, ligamentum nuchae and spinous process of c7-t12

39
Q

trapezius insertion

A

lateral 1/3 of clavicle, acromion and spine of scapula

40
Q

trapezius actions

A

upper fibres:
Bilaterally- extend the head and neck
unilaterally-
laterally flex the head and neck
rotate the head and neck to the opposite side
elevate the scapulothoracic joint
upwardly rotate the scapulothoracic joint

middle fibres:
adduct the scapulothoracic joint
stabilize the scapulothoracic joint

lower fibres:
depress
upwardly rotate the scapulothoracic joint

41
Q

rhomboids innervation

A

dorsal scapular nerve

42
Q

rhomboids origin

A

Major:
spinous process of t2-t5

Minor:
spinous process of c7-t1

43
Q

rhomboids insertion

A

Major:
medial border of the scapula between the spine of the scapula and inferior angle

Minor:
upper portion of the medial border of the scapula, across from the spine of the scapula

44
Q

rhomboids actions

A

adduct scapulothoracic joint

elevate scapulothoracic joint

downwardly rotate the scapulothoracic joint

45
Q

Deltoid innervation

A

axillary Nerve

46
Q

deltoid origin

A

lateral 1/3 of clavicle, acromion and spine of the scapula

47
Q

deltoid insertion

A

deltoid tuberosity

48
Q

deltoid action

A

all:
Abduct the glenohumeral joint

ant. fibres:
flex, medially rotate and horizontally adduct the gh joint

Post fibres:
Extend, laterally rotate and horizontally abduct the gh joint

PCMT Year 2- Mod 5 (3 decks)

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