Depression 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
What is depression?
A
when we push the shoulders down the clavicle moves slightly upwards
acronium moves slightly downwards
3
Q
What is it produced by?
A
gravity
serratus anterior and pectoralis minor if you want to depress further
4
Q
What is it limited by?
A
interclavicualar ligament and interarticular disc
5
Q
What is the range of depression?
A
2cms from normal posture
6
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
