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MSAK-1 > Scapular + Upper Limb Muscles > Flashcards

Scapular + Upper Limb Muscles Flashcards

1
Q

What is the origin of the upper trapezius?

A

external occipital protuberance, medial superior nuchal line of occipital bone, ligamentum nuchae of SP C7

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2
Q

What is the origin of the middle trapezius?

A

SP of T1-T5

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3
Q

What is the origin of lower trapezius?

A

SP T6-T12

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4
Q

What is the insertion of Upper trapezius?

A

lateral clavicle, acromion of scapula

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5
Q

What is the insertion of the middle trapezius?

A

acromion + spine of scapula

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6
Q

What is the insertion of lower trapezius?

A

tubercle @ root of the spine of the scapula

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7
Q

What are the functions of the upper trapezius?

A 
Ext of head @ AOJ
Lat Flex of head @ AOJ
Ext. of neck @ spinal joint
Lat Flex of neck @ spinal joint
contralateral rot of head @ AAJ
contralateral rot of neck @ spinal joint
upward rot of scapula @ STJ
elevation of scapula @ STJ
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8
Q

What are the functions of the middle trapezius?

A

retraction of scapula @ STJ

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9
Q

What are the functions of the lower trapezius?

A

depression of scapula @ STJ

upward rotation of scapula @ STJ

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10
Q

What nerve innervates the trapezius?

A

spinal accessory nerve (CNXI)

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11
Q

What is the origin of the rhomboid major?

A

SP of T2-T5

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12
Q

What is the insertion of the rhomboid major?

A

vertebral border of scapula inferior to root of spine

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13
Q

What is the origin of rhomboid minor

A

SP of C7-T1

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14
Q

What is the insertion of the rhomboid minor?

A

vertebral border of scapula at the root of the spine

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15
Q

What are the common functions of the rhomboid muscles?

A

retraction of scapula @ STJ
downward rot of scapula @ STJ
elev of scapula @ STJ

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16
Q

What is the common innervation of the rhomboid muscles

A

dorsal scapular nerve

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17
Q

What is the origin of the levator scapulae

A

TP of C1-C4

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18
Q

What is the insertion of the levator scapulae

A

medial border of scapula (above spine, superior angle of scapula)

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19
Q

What are the functions of the levator scapulae

A

Elevation of scapula @ STJ
lat flex of neck @ spinal joints
ext of neck @ spinal joints
downward rot of scapula @ STJ

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20
Q

What nerve innervates the levator scapulae

A

dorsal scapular nerve

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21
Q

What nerve innervates all muscles attached to the medial border of the scapula?

A

dorsal scapular nerve

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22
Q

What is the origin of the pectoralis minor

A

2-5 ribs

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23
Q

What is the insertion of the pectoralis minor

A

coracoid process of the scapula

24
Q

What are the functions of the pectoralis minor

A

protraction of scapula @ STJ
downward rot of scapula @ STJ
elevation of ribs during forced inhalation @ sternocostal + costovertebral joint
depression of scapula @ STJ

25
Q

What is the origin of the subclavius muscle

26
Q

What is the insertion of the subclavius

A

subclavian groove of clavicle

27
Q

What are the functions of the subclavius

A

depression of clavicle @ sternoclavicular + acromioclavicular joint
protraction of clavicle @ sternoclavicular + acromioclavicular joint
elevates rib 1 @ sternocostal + costovertbral joint

28
Q

What nerve innervates subclavius

A

nerve to subclavius

29
Q

What is the main upward rotator of the scapula

A

serratus anterior

30
Q

What is the boxer muscle

A

serratus anterior, important in horizontal arm movement

31
Q

What is winged scapula

A

paralysis of serratus anterior due to damage of thoracic nerve, unable to do pushing/raise arm above head

32
Q

What is the origin of the serratus anterior

A

upper 9 ribs

33
Q

What is the insertion of the serratus anterior

A

anterior surface of vertebral border of scapula

34
Q

What are the functions of the serratus anterior

A

protraction of scapula @ STJ

upward rotation of scapula @ STJ

35
Q

What nerve innervates the serratus anterior

A

long thoracic nerve

36
Q

What is the origin of the pectoralis major

A

clavicular head: medial 1/2 of clavicle

sternocostal head: sternum + costal cartliages 1-7

37
Q

What is the insertion of the pectoralis major

A

lateral lip of intertubercualr sulcus of humerus

38
Q

What are the functions of the pectoralis major

A

add of arm @ GHJ
Med rot of arm @ GHJ
flex of arm @ GHJ
horiz add of arm @ GHJ

39
Q

What nerve innervates the pectoralis major

A

medial and lateral pectoral nerves

40
Q

What is the swimmers/crutch muscle

A

latissimus dorsi

41
Q

What is the origin of the latissimus dorsi

A

SP T7-L5
crests of ilium + sacrum
lowest 4 ribs

42
Q

What is the insertion of the latissimus dorsi

A

floor of intertubercular groove of humerus

43
Q

What are the functions of the latissimus dorsi

A

med rot of arm @ GHJ
ex of arm @ GHJ
add of arm @ GHJ
anterior tilt of pelvis @ lumbosacral joint

44
Q

What nerve innervates the latissimus dorsi?

A

thoracodorsal nerve

45
Q

What is the origin of the anterior fibres of the deltoid

A

lateral clavicle

46
Q

What is the origin of the lateral fibres of the deltoid

47
Q

What is the origin of the posterior fibres of the deltoid

A

spine of scapula

48
Q

What is the insertion of the deltoid

A

deltoid tuberosity of humerus

49
Q

What is the function of all the fibres of the deltoid

A

abduction of arm @ GHJ

50
Q

What are the functions of the anterior fibres of the deltoid

A

horz add of arm @ GHJ
med rot of arm @ GHJ
flex of arm @ GHJ

51
Q

What are the functions of the posterior fibres of the deltoid

A

lat rot of arm @ GHJ
Ext of arm @ GHJ
horiz abd @ GHJ

52
Q

What nerve innervates the deltoid

A

upper and lower subscapular nerves

53
Q

What is the origin of the teres major?

A

inferior lateral border of scapula

54
Q

What is the insertion of the teres major

A

medial lip of bicipital groove of humerus

55
Q

What are the functions of the teres major

A

med rot of arm @ GHJ
add of arm @ GHJ
ext of arm @ GHJ

56
Q

What nerve innervates the teres major

A

lower subscapular nerve

MSAK-1 (19 decks)

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