Shoulder

Question 1

parts of the humerus

Answer 1

• head, shaft, dista; end
• anatomical neck
• greater and lesser tubercle
• intertubercular groove
• deltoid tuberosity
• condyle/epicondyle (med. and lat.)
• supracondylar ridge (med. and lat.)
• olecranon fossa (post surface of humerus- where olecranon sits on elbow)

Question 2

parts of the scapula

Answer 2

• supraspinous fossa
• infraspinous fossa
• subscapular fossa
• medial and lateral border
• acromion
• coracoid process
• glenoid cavity
• scapular spine

Question 3

fossa

Answer 3

a shallow depression in a surface

Question 4

scapulothoracic movements

Answer 4

• protraction/retraction
• upward rotation
• downward rotation

Question 5

glenohumeral joint (GHJ)
shoulder

Answer 5

type: ball and socket
movement: flexion/extension, abduction/adduction, medial/lateral rotation

Question 6

acromioclavicular joint

Answer 6

type: plane
movement: sliding/gliding

Question 7

sternoclavicular joint

Answer 7

type: saddle
movement: elevation/depression

Question 8

muscles in the rotator cuff

Answer 8

• supraspinatus
• infraspinatus
• teres minor
• scapularis

Question 9

supraspinatus

Answer 9

origin:
- supraspinous fossa of scapula
insertion:
- greater tubercle of humerus
innervation: brachial plexus
function: abduction of humerus at GHJ

Question 10

infraspinatus

Answer 10

origin:
- infraspinous fossa of scapula
insertion:
-greater tubercle of humerus
innervation: brachial plexus
function: lateral rotation of humerus at GHJ

Question 11

teres minor

Answer 11

origin:
- lateral border of scapula
insertion:
- greater tubercle of humerus
innervation: brachial plexus
function: lateral rotation of arm at GHJ

Question 12

scapularis

Answer 12

origin:
- subscapular fossa
insertion:
- lesser tubercle of humerus
innervation: brachial plexus
function: medial rotation of arm at GHJ

Question 13

pectoralis major

Answer 13

origin:
- medial clavicle
- sternum and costal cartilage of ribs I-VII
insertion:
- intertubercular groove
innervation: brachial plexus
function: adduction, med. rotation, flexion of humerus at GHJ

Question 14

deltoid

Answer 14

origin:
- spine of scapula
- lateral clavicle
- acromion
insertion:
- deltoid tuberosity
innervation: brachial plexus
function: shoulder abduction, flexion/extension at GHJ

Question 15

latissimus dorsi

Answer 15

origin:
- sacrum
- iliac crest
- spinous process of lumbar vertebrae
- thoracolumbar fascia
insertion:
- intertubercular groove
innervation: brachial plexus
function: extension, adduction, and medial rotation of humerus at GHJ

Question 16

serratus anterior

Answer 16

origin:
- upper 9 ribs
insertion:
- medial border of scapula
innervation: brachial plexus
function: protraction of scapula