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Anatomy > Shoulder and chest wall > Flashcards

Shoulder and chest wall Flashcards

1
Q

Subscapular fossa

A

Large concave depression over most of the scapular surface

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2
Q

Coracoid process

A

Hook-like projection under clavicle where pec minor attaches

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3
Q

Glenoid fossa

A

Shallow cavity, articulates with head of humorous to form glenohumeral shoulder joint

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4
Q

Spine

A

Most prominent feature on posterior runs transversely across and divides surface into two

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5
Q

Acromion

A

Projection of spine that arches over the glenohumeral joint and articulates with he clavicle at the acromiclavicular joint

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6
Q

Infraspinous fossa

A

Area below scapula spine, displays convex shape

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7
Q

Supraspinous fossa

A

Above scapula spine, much smaller and more convex than infra

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8
Q

Trapezius origins

A

From the skull, nuchal ligament and spinous processes C7-T12

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9
Q

trapezius insertions

A

Clavicle, acromion and scapula spine

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10
Q

Trapezius innervation

A

Accessory nerves

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11
Q

trapezius actions

A

Upper fibres elevate scapula and rotates during arm abduction
Middle fibre retract scapuka
Lower fibres pull scapula inferiorly

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12
Q

Latissmus dorsi Origins

A

T6-T12, iliac crest, thoracolumbar fascia and inferior 3 ribs

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13
Q

Latissmus dorsi attachments

A

Fibres converge into a tendon that attaches to the inter tubercular sulcus of the humerous

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14
Q

Latissmus dorsi actions

A

Extends, adducts and medially rotates the upper limb

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15
Q

Levator scapulae origins

A

Transverse processes of C1-C4

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16
Q

Levator scapulae insertions

A

Medial border of scapula

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17
Q

Levator scapulae actions

A

Elevates the scapula

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18
Q

Rhomboid major origins

A

T2-T5

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19
Q

Rhomboid major insertions

A

Media border of scapula between the spine and inferior angle

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20
Q

Rhomboid major actions

A

Retracts and rotates the scapula

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21
Q

Rhomboid minor origins

A

C7-T11

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22
Q

Rhomboid minor insertions

A

Attaches to medial scapula border at level of scapula spine

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23
Q

Rhomboid minor actions

A

Retracts and rotates the scapula

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24
Q

Deltoid origins

A

From scapula and clavicle

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25
Q

Deltoid insertions

A

Deltoid tuberosity on humerus lateral side

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26
Q

Deltoid actions

A 
Anterior = flexion and medial rotation
Posterior = Extension and lateral rotation
Middle = Major abductor of arm
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27
Q

teres major origins

A

Posterior surface of inferior angle of scapula

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28
Q

Teres major insertions

A

Medial lip of interlobular groove of humerus

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29
Q

Teres major actions

A

Adducts at shoulder and medially rotates the arm

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30
Q

Rotator cuff muscles

A

Group of four muscles originating from scapula and attach to humeral head
Act to pull humeral head into glenoid fossa
Gives extra stability

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31
Q

Supraspinatus origins

A

Supraspinous fossa of the scapula

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32
Q

Supraspinatus insertions

A

Attaches to greater tubercle of humerus

33
Q

Supraspinatus actions

A

Abducts arm 0-15 degrees and assists deltoid for 15-90 degrees

34
Q

Infraspinatus origins

A

From infraspinous fossa of scapula

35
Q

Infraspinatus insertions

A

Greater tubercle of humerus

36
Q

Infraspinatus actions

A

Laterally rotates the arm

37
Q

Subscapularis origins

A

From sub scapular fossa on costal surface of scapula

38
Q

Subscapularis insertions

A

Attaches to lesser tubercle of humerus

39
Q

Subscapularis actions

A

medially rotates the arm

40
Q

Teres minor origins

A

posterior surface of scapula adjacent to lateral border

41
Q

Teres minor insertions

A

Greater tubercle of the humerus

42
Q

Teres minor actions

A

Laterally rotates the arm

43
Q

Pectoralis major attachments

A

Distal attachments of both heads into intertuvercular sulcus of humerus

44
Q

Clavicular head origins

A

Anterior surface of medial clavicle

45
Q

Sternocostal head origins

A

Anterior surface of sternum, superior 6 costal cartilages and aponeurosis of external oblique muscles

46
Q

pectorals major actions

A

Adducts and medially rotates upper limb, draws scapula anteroinferiorly

47
Q

Pectoralis minor origins

A

Ribs 3, 4 and 5

48
Q

Pectoralis minor insertions

A

Coracoid process of scapula

49
Q

Pectoralis minor action

A

Stabilises scapula by drawing it anterioinferiorly against thoracic wall

50
Q

Serratus anterior origins

A

Several strips from ribs 1-8

51
Q

Serratus anterior insertions

A

Costal surfaces of medial scapula border

52
Q

Serratus anterior action

A

Rotates scapula, allowing arm to be raised over 90 degrees. Holds scapula against ribcafe

53
Q

Clavicle

A

Attaches upper limb to trunk

Protects underlying neurovascular structures

54
Q

Sternal/medial clavicle end

A

Contains large facet for articulation with manubrium of sternum at sternoclavicular joint

55
Q

Acromial/lateral end

A

Small facet for articulation with scapula acromion at acromioclavicular joint

56
Q

Subclavian artery

A

Beginning of supply to upper limb
Right = brachiocephalic trunk
Left = aortic arch

57
Q

Extension

A

Produced by posterior deltoid, latissimus doors and teres major

58
Q

Flexion

A

produced by pectorals major anterior deltoid and coracobrachialis. biceps brachia weakly assists

59
Q

Abduction

A

First 0-15 by supraspinatus. Middle fibres of deltoid do rest

60
Q

Adduction

A

Produced by pectorals major, latissimus doors and teres major

61
Q

Internal rotation

A

subscapularis, pectoralis major, latissimus doors, teres major and anterior deltoid

62
Q

External rotation

A

Infraspinatus and teres minor

63
Q

Factors that contribute to motility

A

Bell and socket joint
Shallow glenoid cavity and large humeral head = 1:4 disproportion
Inherent laxity of joint capsule

64
Q

Factors contributing to stability

A

Rotator cuff muscles, ligaments, glenoid labrum and biceps tendon

65
Q

trapezius innervation

A

Accessory nerve

66
Q

Latissmus dorsi innervation

A

Thoracodorsal nerve

67
Q

Levator scapulae innervation

A

Dorsal scapula nerve

68
Q

Rhomboid major innervation

A

Dorsal scapula nerve

69
Q

Rhomboid minor innervation

A

Dorsal scapular nerve

70
Q

Delotid innervation

A

Axillary nerve

71
Q

Teres major innervation

A

Lower subscapular nerve

72
Q

Suprascapularis innervation

A

Suprascapular nerve

73
Q

Infraspinatus innervation

A

Suprascapular nerve

74
Q

Subscapularis innervation

A

upper and lower subscapular nerves

75
Q

teres minor innervation

A

axillary nerve

76
Q

Pectoralis major innervation

A

lateral and medial pectoral nerves

77
Q

Pectoralis minor innervation

A

medial pectoral nerve

78
Q

Serratus anterior innervation

A

Long thoracic nerve

Anatomy (6 decks)

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