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Flashcards in Muscles Deck (65):
1

Trapezius proximal attachment

-medial 1/3 of superior nuchal line
-external occpital protuberance
-ligamentum nuchae
-spines and supraspinous ligaments from C7 to T12

2

Trapezius distal attachment

-poster border of lateral 1/3 of clavicle
-acromion
-scapular spine

3

Trapezius innervation

spinal accessory nerve
ventral rami C3, C4

4

Trapezius function

upward rotation (lower)

5

Latissimus Dorsi proximal attachment

-spinous process of T7-T12
-thoracoumbar fascia
-posterior part of iliac crest
-inferior 3-4 ribs

6

Latissimus Dorsi distal attachment

-intertubercal groove

7

Latissium Dorsi innervation

thoracodorsal nerve (C6,C7, C8)

8

Latissium Dorsi function

internal rotation, shoulder extension, some adduction

9

Levator scapulae proximal attachment

-transverse processes of C1-C4

10

Levator scapulae distal attachment

-medial scapular border between superior angle and end of scapular spine

11

Levator scapulae innervation

dorsal scapular (C5) and cervical (C3,C4)

12

Levator scapulae function

downward rotation

13

Rhomboid minor proximal attachment

-lower ligament nuchae
-spines of C7 and T1

14

Rhomboid minor distal attachment

medial end of spine of scapula

15

Rhomboid minor innervation

dorsal scapular (C4,C5)

16

Rhomboid major proximal attachment

spines of T2-T5 vertebrae

17

Rhomboid major distal attachment

-medial border of scapula from spine to inferior angle

18

Rhomboid major innervation

dorsal scapular (C4,C5)

19

Rhomboid function

adduction or retration, downward rotation

20

Deltoid proximal attachment

-lateral 1/3 clavicle
-acromion
-spine of scapula

21

Deltoid distal attachment

-deltoid tuberosity

22

Deltoid innervation

axillary nerve (C5,C6)

23

Deltoid function

anterior: flexion and some abduction, horizontal abduction, internal rotation
posterior: horizontal abduction, extension, external rotation
middle: major abductor of shoulder joint

24

Teres Major proximal attachment

-inferior scapular angle

25

Teres Major distal attachment

-medial lip of intertubercular groove

26

Teres Major innvervation

lower subscapular nerve (C5, C6)

27

Teres Major function

internal rotation, adduction, extension

28

Supraspinous proximal attachment

-suprascapular fossa

29

Supraspinous distal attachment

-superior facet of greater tubercle of humerus

30

Supraspinous innervation

suprascapular nerve (C4,C5,C6)

31

Supraspinous function:

stabilize, pull head of humerus towards glenoid fossa & allows for some slight abduction

32

Infraspinatus proximal attachment

inferior scapular fossa

33

Infraspinatus distal attachment

medial facet of greater tubercle of humerus

34

Infraspinatus innervation

suprascapular nerve (C5,C6)

35

Infraspinatus function:

external rotation, assist with abduction (pulling head of the joint up)

36

Teres Minor proximal attachment

-upper 2/3 of lateral border of scapula

37

Teres Minor distal attachment

-inferior facet of greater tubercle of humerus

38

Teres Minor innervation

axillary nerve (C5,C6)

39

Teres Minor function

external rotation, adduction

40

Subscapularis proximal attachment

-subscapular fossa

41

Subscapularis distal attachment

-lesser tubercle of humerus

42

Subscapularis innervation

-upper and lower subscapular nerves (C5,C6,C7)

43

Subscapularis function

internal rotation, adduction, horizontal adduction

44

Pectoralis Major proximal attachment

-medial half of clavicle
-sternum
-upper six costal cartilages

45

Pectoralis Major distal attachment

-lateral lip of intertubercular sulcus

46

Pectoralis Major innervation

medial and lateral pectoral nerves (C5,C6:clavicular, C6, C7,C8,T1-sternal)

47

Pectoralis Major function

downward rotation, protraction

48

Pectoralis Minor proximal attachment

-ribs 3-5

49

Pectoralis Minor distal attachment

-coracoid process

50

Pectoralis Minor innervation

-medial pectoral nerves (C5,C6,C7,C8,T10

51

Pectoralis Minor function

-protraction scapula
-depress scapula

52

Subclavius proximal attachment

-rib 1

53

Subclavius distal attachment

inferior clavicle

54

subclavius innervation

nerve to subclavius (C5,C6)

55

Subclavius function

depression of clavicle

56

Serratus anterior proximal attachment

-lateral regions of ribs 1-8

57

Serratus anterior distal attachment

-anterior surface if medial border of scapula

58

Serratus anterior innervation

-long thoracic nerve (C5,C6,C7)

59

Serratus anterior function

protraction

60

What are the upward rotators of the scapula?

-serratus anterior
-upper trapezius

61

What are the downward rotators of the scapula?

-pec minor
-rhomboids
-levator scapulae

62

What are the elevators of the scapula?

-traps
levator scapulae

63

What are the depressors of the scapula?

-pec minor
-Lats

64

What are the protractors of the scapula?

Pec minor
serratus anterior

65

What are the retractors of the scapula?

middle traps
rhomboids