Axilla

Question 1

List the muscles that make up the anterior border of the axilla

Answer 1

Pectoralis major

Pectoralis minor

Question 2

What is the origin + insertion of pectoralis major?

Answer 2

Anteromedial clavicle/manubrium of sternum

Intertubular sulcus of humerus

Question 3

What is the nerve supply to pectoralis major?

Answer 3

Brachial plexus

Question 4

Which movements does pectoralis major enable?

Answer 4

Arm: adduction, flexion, internal rotation

Question 5

What is the origin + insertion of pectoralis minor?

Answer 5

Ribs 3-5

Coracoid process of scapula

Question 6

What is the nerve supply to pectoralis minor?

Answer 6

Brachial plexus

Question 7

Name the muscle that makes up the medial border of the axilla

Answer 7

Serratus anterior

Question 8

What is the origin + insertion of serratus anterior?

Answer 8

Upper 8-9 ribs

Medial margin of scapula

Question 9

What is the nerve supply to serratus anterior?

Answer 9

Long thoracic nerve

Question 10

Name the muscle that makes up the posterior border of the axilla

Answer 10

Teres major

Question 11

What is the origin + insertion of teres major?

Answer 11

Inferior angle of scapula

Lesser tubercle of humerus

Question 12

What is the nerve supply to teres major?

Answer 12

Brachial plexus

Question 13

Which movements does teres major enable?

Answer 13

Arm: adduction, internal rotation