Thoracotomy and Pneumoncetomy

Question 1

Pectoralis major

Answer 1

origin: clavicle, sternum and costal cartilages
insertion: intertubercular groove of the humerus
Actions: adduction and medial rotation of upper limb

Question 2

Pectoralis minor

Answer 2

origin: coracoid process (scapula)
insertion: ribs 3-5
actions: stabilises scapula

Question 3

Serratus anterior

Answer 3

origin: scapula
insertion: ribs 1-8
actions: stabilise and portract the scapula