Protraction

Question 1

Serratus Anterior

Answer 1

O- lateral surfaces of upper 8-9 ribs and deep fascia overlying the related intercostal spaces
I- costal surface of medial border of scapula
A- protraction and lateral rotation of the scapula
I- long thoracic nerve

Keeps medial border and inferior angle of scapula opposed to thoracic wall

Question 2

Pectoralis Minor

Answer 2

O- anterior surfaces ad superior borders of ribs 3,4,5 and from deep fascia overlying the related intercostal spaces
I- coracoid process of scapula
I- medial pectoral nerve C5,C6,C7,C8,T1
A- pulls tip of shoulder down 
protracts and medial rotates the scapula
accessory muscle of inspiration

Question 3

How much movement?

Answer 3

5cms anterior movement

Question 4

What is it limited by?

Answer 4

Costoclavicular ligament

Question 5

What is protraction?

Answer 5

Forward movement of the acromion at the acromioclavicular joint
Clavicle goes backwards at the sternoclavicular joint