Muscles of the forelimb

Question 1

Superificial pectoral. Where, origin, insertion, innervation, action

Answer 1

Lateral scapula / shoulder
First 2 sternobrae
Entire head of humerus 
Craniopectoral nerves C7/C8
Adducts forelimb

Question 2

Deep pectoral. Where, origin, insertion, innervation, action

Answer 2

Lateral scapula and shoulder
Cranial - caudal part of the sternum
Greater tubercle (some on lesser)
Caudo pectoral C8, T1
Adducts FL, draws limb causally and flexes shoulder