Actions of Pectoral and Scapular Muscles

Question 1

Pectoralis Major

Answer 1

Adducts and medially rotates humerus, flexes humerus

Question 2

Pectoralis Minor

Answer 2

Protracts, depresses, stabilizes scapula

Question 3

Serratus Anterior

Answer 3

Protracts scapula, rotates scapula laterally/upwards

Question 4

Subclavius

Answer 4

Anchors and depresses scapula

Question 5

Deltoid

Answer 5

Flexes and medially rotates arm, abducts arm, extends and laterally rotates arm.

Question 6

Teres Major

Answer 6

Adducts and medially rotates arm

Question 7

Supraspinatus

Answer 7

Initiates and assists deltoid in abduction of arm

Question 8

Infraspinatus

Answer 8

Laterally rotates arm

Question 9

Teres Minor

Answer 9

Lateral rotation of arm

Question 10

Subscapularis

Answer 10

Medially rotates and adducts arm