Protractors

Question 1

Serratus Anterior

Answer 1

Origin- outer surfaces and sup borders of upper 8-9 ribs and intercostal fascia
Insertion- costal surface of med border of scapula

Innervation- Long Thoracic L5-7

Question 2

Pectoralis Minor

Answer 2

Origin- ribs 3-5 and their intercostal cartilages
Insertion- coracoid process of scapula

Innervation- Med/Lat Pectoral L6-8
Other action- accessory muscle of inspiration if necessary as attaches to ribs