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Anatomy > 17. Pectoral Girdle and Shoulder > Flashcards

17. Pectoral Girdle and Shoulder Flashcards

1
Q

Name some important bony features of the scapula (9)

Make sure you can identify them

A 
Coracoid process
Acromion
Spine
Superior angle
Inferior angle
Glenoid cavity
Subscapular fossa
Infraspinatus fossa
Supraspinatus fossa
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2
Q

Make sure you know the origins and attachments of muscles onto the scapula, humerus and clavicle

A

Lecture slide 4, 5, 6

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3
Q

Name some important bony features of the humerus (7)

A 
Greater tubercle
Lesser tubercle
Bicipital groove 
Surgical neck
Anatomical neck
Deltoid tuberosity 
Head
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4
Q

Origin of pec major?

A

Clavicle
Costal cartilage ribs 1-6
Sternum

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5
Q

Insertion of pec major?

A

Outer lip of bicipital groove of humerus

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6
Q

Function of pec major?

A

Flexion and adduction of arm

Medial rotation of humerus

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7
Q

Innervation of pec major?

A

Medial (C8-T1) and lateral (C5-7) pectoral nerves

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8
Q

Origin of pec minor?

A

3/4/5th ribs

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9
Q

Insertion of pec minor?

A

Coracoid process of scapula

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10
Q

Function of pec minor?

A

Pulls shoulder anterior and inferior

Can also elevate ribs if the shoulder is fixed

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11
Q

Innervation of pec minor?

A

Medial pectoral nerve (C8, T1)

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12
Q

Origin of serratus anterior?

A

Outer surface upper 8 ribs

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13
Q

Insertion of serratus anterior?

A

Medial border of scapula

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14
Q

Function of serratus anterior?

A

Protraction of scapula

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15
Q

Innervation of serratus anterior?

A

Long thoracic nerve (C5-C7)

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16
Q

What are the 3 parts of trapezius?

A

Ascending part
Transverse part
Descending part

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17
Q

Origin of trapezius?

A

Superior nuchal line
Nuchal ligament
Spinous processes of C7-T12

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18
Q

Insertion of trapezius?

A

Lateral 1/3rd clavicle
Acromion
Spine of scapula

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19
Q

Function of ascending part of trapezius?

A

Depress scapula

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20
Q

Function of transverse part of trapezius?

A

Retracts scapula

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21
Q

Function of descending part of trapezius?

A

Elevate scapula

Rotate glenoid cavity

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22
Q

Inneration of trapezius?

A

Spinal accessory nerve - motor

C3, C4 - sensory

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23
Q

Origin of lat dorsi?

A

Ilium
Thoracolumbar fascia
Spinous process of lower 6 thoracic vertebrae

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24
Q

Insertion of lat dorsi?

A

Floor of bicipital groove of humerus

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25
Q

Function of lat dorsi?

A

Extension
Medial rotation
Adduction
of arm

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26
Q

Innervation of lat dorsi?

A

Thoracodorsal nerve C6-C8

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27
Q

Origin of levator scapulae?

A

Transverse processes of atlas and axis

3/4th vertebrae

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28
Q

Insertion of levator scapulae?

A

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

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29
Q

Function of levator scapulae?

A

Control scapula
Elevate trapezius
Can laterally flex neck if the shoulder is fixed

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30
Q

Innervation of levator scapulae?

A

Direct C3-C5 via dorsal scapular nerve

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31
Q

Origin of rhomboid major?

A

2-5 thoracic spines

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32
Q

Insertion rhomboid major?

A

Medial border of scapula, right from spine to inferior angle

33
Q

Function of rhomboid major?

A

Retraction of scapula

34
Q

Innervation of rhomboid major?

A

Dorsal scapular nerve C4-C5

35
Q

Origin of rhomboid minor?

A

Nuchal ligament

C7

36
Q

Insertion of rhomboid minor?

A

T1 thoracic spines

Medial end of spine of scapula

37
Q

Function of rhomboid minor?

A

Retraction of scapula

38
Q

Innervation of rhomboid minor?

A

Dorsal scapular nerve C4-C5

39
Q

Origin of deltoid?

A

Lateral 1/3rd clavicle
Acromion
Spine of scapula

40
Q

Insertion of deltoid?

A

Deltoid tuberosity of humerus

41
Q

Function of deltoid?

A

Middle - arm abduction (from 10-110 degrees)
Posterior - extension and lateral rotation
Anterior - flexion and medial rotation

42
Q

Innervation of deltoid?

A

Axillary nerve C5,C6

43
Q

Origin of teres major?

A

Lateral border of scapula

44
Q

Insertion of teres major?

A

Medial lip of bicipital groove of humerus

45
Q

Function of teres major?

A

Adduction and medial rotation of the arm

46
Q

Innervation of teres major?

A

Subscapular nerve C5-C6

47
Q

Origin of subclavius?

A

Sternal end of 1st rib

48
Q

Insertation of subclavius?

A

Middle 1/3rd of underside of clavicle

49
Q

Function of subclavius?

A

Draws down and forwards during abduction

50
Q

Innervation of subclavius?

A

Nerve to subclavius C5, C6

51
Q

Name the rotator cuff muscles

A

Subscapularis
Teres minor
Supraspinatus
Infraspinatus

52
Q

Origin of subscapularis?

A

Subscapular fossa

53
Q

Insertion of subscapularis?

A

Lesser tubercle of humerus

54
Q

Function of subscapularis?

A

Medially rotate arm

55
Q

Innervation of subscapularis?

A

Upper and lower subscapular nerves C5-C7

56
Q

Origin of supraspinatus?

A

Supraspinatus fossa

57
Q

Insertion of supraspinatus?

A

Greater tubercle of humerus

58
Q

Function of supraspinatus?

A

Abducts arm first 10-15 degrees

59
Q

Innervation of supraspinatus?

A

Suprascapular nerve C5-C6

60
Q

Origin of infraspinatus?

A

Infraspinatus fossa of scapula

61
Q

Insertion of infraspinatus?

A

Greater tubercle of humerus

62
Q

Function of infraspinatus?

A

Lateral rotation of arm

63
Q

Innervation of infraspinatus?

A

Suprascapular nerve

64
Q

Origin of teres minor?

A

Upper 2/3rd lateral border of scapula

65
Q

Insertion of teres minor?

A

Greater tubercle of humerus

66
Q

Function of teres minor?

A

Lateral rotation of arm

67
Q

Innervation of teres minor?

A

Axillary nerve C5-C6

68
Q

MAKE SURE YOU CAN NAME AND LABEL ALL THE LIGAMENTS ASSOCIATED WITH THE SHOULDER JOINT

A

Glenohumeral (sup, middle and inf.)
Coracohumeral
Transverse humeral

SLIDE 25

69
Q

What is the function of the transverse humeral ligament?

A

Holds the biceps tendon in place

70
Q

MAKE SURE YOU CAN NAME AND LABEL ALL THE LIGAMENTS ASSOCIATED WITH THE CLAVICLE

A 
Acromioclavicular
Corcacoacromial 
Conoid + Trapeziod = coracoclavicular 
Sternoclavicular
Costoclavicular

SLIDE 26

71
Q

What artery does the subclavian arise from?

A

RIGHT - bracheocephalic

LEFT - aortic arch

72
Q

What are the branches of the subclavian artery? (5)

A 
Dorsal scapular
Costocervical trunk 
Internal thoracic
Vertebral 
Thyrocervical trunk
73
Q

Which neck of the humerus is most frequently fractured?

A

Surgical neck

74
Q

What nerve and artery are at risk of damage in a fracture to the surgical neck of the humerus?

A

Axillary nerve

Posterior circumflex artery

75
Q

What are the 2 anatomical ‘spaces’ found in the shoulder region?

A

Quadrangular

Triangular

76
Q

What muscles make up the quadrangular space?

A

Long head of triceps
Teres minor
Teres major

77
Q

What runs through the quadrangular space?

A

Axillary nerve

Posterior circumflex artery

78
Q

What muscles make up the triangular space?

A

Teres major

Long head of triceps

79
Q

What runs through the triangular space?

A

Radial nerve

Profunda brachii artery

Anatomy (49 decks)

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