Muscles from Cervical and Thoracic Regions

Question 1

What are the muscles of the pectoral region

Answer 1

Pectoralis major

Pectoralis minor

Serratus anterior

Subclavius

Question 2

What is the function and innervation of the pectoralis major

Answer 2

Abducts and medially rotates upper limb

Clavicular head flexes upper limb

Lateral and medail pectoral nerves

Question 3

What is the function and innervation of the pectoralis minor

Answer 3

Stabilises scapula, drawing it anteroinferiorly against thoracic wall

Medial pectoral nerve

Question 4

What is the function and innervation of the serratus anterior

Answer 4

Rotates scapula and holds it against ribcage

Long thoracic nerve

Question 5

What is the function and innervation of the subclavius

Answer 5

Anchors and depresses the clavicle

Nerve to subclavius