Protraction Flashcards
1
Q
Serratus Anterior
A
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
2
Q
Pectoralis Minor
A
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
3
Q
How much movement?
A
5cms anterior movement
4
Q
What is it limited by?
A
Costoclavicular ligament
5
Q
What is protraction?
A
Forward movement of the acromion at the acromioclavicular joint
Clavicle goes backwards at the sternoclavicular joint
