Shoulder and chest wall

Question 1

Subscapular fossa

Answer 1

Large concave depression over most of the scapular surface

Question 2

Coracoid process

Answer 2

Hook-like projection under clavicle where pec minor attaches

Question 3

Glenoid fossa

Answer 3

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

Question 4

Spine

Answer 4

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

Question 5

Acromion

Answer 5

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

Question 6

Infraspinous fossa

Answer 6

Area below scapula spine, displays convex shape

Question 7

Supraspinous fossa

Answer 7

Above scapula spine, much smaller and more convex than infra

Question 8

Trapezius origins

Answer 8

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

Question 9

trapezius insertions

Answer 9

Clavicle, acromion and scapula spine

Question 10

Trapezius innervation

Answer 10

Accessory nerves

Question 11

trapezius actions

Answer 11

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

Question 12

Latissmus dorsi Origins

Answer 12

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

Question 13

Latissmus dorsi attachments

Answer 13

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

Question 14

Latissmus dorsi actions

Answer 14

Extends, adducts and medially rotates the upper limb

Question 15

Levator scapulae origins

Answer 15

Transverse processes of C1-C4

Question 16

Levator scapulae insertions

Answer 16

Medial border of scapula

Question 17

Levator scapulae actions

Answer 17

Elevates the scapula

Question 18

Rhomboid major origins

Answer 18

T2-T5

Question 19

Rhomboid major insertions

Answer 19

Media border of scapula between the spine and inferior angle

Question 20

Rhomboid major actions

Answer 20

Retracts and rotates the scapula

Question 21

Rhomboid minor origins

Answer 21

C7-T11

Question 22

Rhomboid minor insertions

Answer 22

Attaches to medial scapula border at level of scapula spine

Question 23

Rhomboid minor actions

Answer 23

Retracts and rotates the scapula

Question 24

Deltoid origins

Answer 24

From scapula and clavicle

Question 25

Deltoid insertions

Answer 25

Deltoid tuberosity on humerus lateral side

Question 26

Deltoid actions

Answer 26

``` Anterior = flexion and medial rotation Posterior = Extension and lateral rotation Middle = Major abductor of arm ```

Question 27

teres major origins

Answer 27

Posterior surface of inferior angle of scapula

Question 28

Teres major insertions

Answer 28

Medial lip of interlobular groove of humerus

Question 29

Teres major actions

Answer 29

Adducts at shoulder and medially rotates the arm

Question 30

Rotator cuff muscles

Answer 30

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

Question 31

Supraspinatus origins

Answer 31

Supraspinous fossa of the scapula

Question 32

Supraspinatus insertions

Answer 32

Attaches to greater tubercle of humerus

Question 33

Supraspinatus actions

Answer 33

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

Question 34

Infraspinatus origins

Answer 34

From infraspinous fossa of scapula

Question 35

Infraspinatus insertions

Answer 35

Greater tubercle of humerus

Question 36

Infraspinatus actions

Answer 36

Laterally rotates the arm

Question 37

Subscapularis origins

Answer 37

From sub scapular fossa on costal surface of scapula

Question 38

Subscapularis insertions

Answer 38

Attaches to lesser tubercle of humerus

Question 39

Subscapularis actions

Answer 39

medially rotates the arm

Question 40

Teres minor origins

Answer 40

posterior surface of scapula adjacent to lateral border

Question 41

Teres minor insertions

Answer 41

Greater tubercle of the humerus

Question 42

Teres minor actions

Answer 42

Laterally rotates the arm

Question 43

Pectoralis major attachments

Answer 43

Distal attachments of both heads into intertuvercular sulcus of humerus

Question 44

Clavicular head origins

Answer 44

Anterior surface of medial clavicle

Question 45

Sternocostal head origins

Answer 45

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

Question 46

pectorals major actions

Answer 46

Adducts and medially rotates upper limb, draws scapula anteroinferiorly

Question 47

Pectoralis minor origins

Answer 47

Ribs 3, 4 and 5

Question 48

Pectoralis minor insertions

Answer 48

Coracoid process of scapula

Question 49

Pectoralis minor action

Answer 49

Stabilises scapula by drawing it anterioinferiorly against thoracic wall

Question 50

Serratus anterior origins

Answer 50

Several strips from ribs 1-8

Question 51

Serratus anterior insertions

Answer 51

Costal surfaces of medial scapula border

Question 52

Serratus anterior action

Answer 52

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

Question 53

Clavicle

Answer 53

Attaches upper limb to trunk | Protects underlying neurovascular structures

Question 54

Sternal/medial clavicle end

Answer 54

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

Question 55

Acromial/lateral end

Answer 55

Small facet for articulation with scapula acromion at acromioclavicular joint

Question 56

Subclavian artery

Answer 56

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

Question 57

Extension

Answer 57

Produced by posterior deltoid, latissimus doors and teres major

Question 58

Flexion

Answer 58

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

Question 59

Abduction

Answer 59

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

Question 60

Adduction

Answer 60

Produced by pectorals major, latissimus doors and teres major

Question 61

Internal rotation

Answer 61

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

Question 62

External rotation

Answer 62

Infraspinatus and teres minor

Question 63

Factors that contribute to motility

Answer 63

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

Question 64

Factors contributing to stability

Answer 64

Rotator cuff muscles, ligaments, glenoid labrum and biceps tendon

Question 65

trapezius innervation

Answer 65

Accessory nerve

Question 66

Latissmus dorsi innervation

Answer 66

Thoracodorsal nerve

Question 67

Levator scapulae innervation

Answer 67

Dorsal scapula nerve

Question 68

Rhomboid major innervation

Answer 68

Dorsal scapula nerve

Question 69

Rhomboid minor innervation

Answer 69

Dorsal scapular nerve

Question 70

Delotid innervation

Answer 70

Axillary nerve

Question 71

Teres major innervation

Answer 71

Lower subscapular nerve

Question 72

Suprascapularis innervation

Answer 72

Suprascapular nerve

Question 73

Infraspinatus innervation

Answer 73

Suprascapular nerve

Question 74

Subscapularis innervation

Answer 74

upper and lower subscapular nerves

Question 75

teres minor innervation

Answer 75

axillary nerve

Question 76

Pectoralis major innervation

Answer 76

lateral and medial pectoral nerves

Question 77

Pectoralis minor innervation

Answer 77

medial pectoral nerve

Question 78

Serratus anterior innervation

Answer 78

Long thoracic nerve