Pectoral/ axilla

Question 1

Name the 2 muscles in this region

Answer 1

Pectoralis major

Pectoralis minor

Question 2

What nerve innervates the pec major?

Answer 2

Medial and lateral pectoral nerves

Question 3

What nerve innervates the pec minor?

Answer 3

Medial pectoral nerve

Question 4

What is the arterial supply of the pec major?

Answer 4

Pectoral branch of thoracic - acromial artery, perforating branches of internal thoracic artery

Question 5

The pectoral branch of the thoracic - acromial and intercostal lateral thoracic arteries supply which muscles?

Answer 5

Pec minor

Question 6

Pec major

Answer 6

Flexes and adducts arm

Rotates arm medially

Question 7

Pec minor

Answer 7

Lowers lateral angle of scapula and portracts the scapula

Question 8

Attachments of pec major

Answer 8

Sternal half of clavicle, sternum to 7th rib, cartilage of true ribs, aponeurosis of external oblique muscle to lateral lip of intertubercular sulcus of humerus

Question 9

Attachments of pec minor

Answer 9

Outer surface of upper margin of ribs 3-5 to coracoid process of scapula