Pectoral Region

Question 1

Pectoralis major (two heads)

Answer 1

O: (Clavicular) clavicle, (sternocostal) sterum and ribs
I: Intertubecular groove
A: ADduct, med rot @ shoulder; (clavicular) flex @ shoulder
V: Med and lat pectoral

Question 2

Pectoralis minor

Answer 2

O: Ribs 3-5
I: Corocoid process
A: Depress shoulder
V: Med pectoral

Question 3

Serratous anterior

Answer 3

O: Ribs 2-8
I: Costal (ant) surface of scapula
A: Rotate scapula (allow arm to be raised over 90 deg)
V: Long thoracic