Pectorals Area

Question 1

Pectoralis Major Clavicular head (origin)

Answer 1

medial 2/3 of clavicle

Question 2

Pectoralis Major Clavicular head (insertion)

Answer 2

lateral lip of intertubercular groove of humerus

Question 3

Pectoralis Major Clavicular head (action)

Answer 3

adduction and medial rotation and flexion of arm

Question 4

Pectoralis Major Clavicular head (innervation)

Answer 4

Medial and lateral pectoral nerves

Question 5

Pectoralis Major Sternal Head (origin)

Answer 5

sternum and costal cartilages 1-6

Question 6

Pectoralis Major Sternal Head (insertion)

Answer 6

lateral lip of intertubercular groove of humerus

Question 7

Pectoralis Major Sternal Head (action)

Answer 7

adduction and medial rotation of arm

Question 8

Pectoralis Major Sternal Head (innervation)

Answer 8

medial and lateral pectoral nerve

Question 9

Pectoralis Minor (origin)

Answer 9

ribs 3-5

Question 10

Pectoralis Minor (insertion)

Answer 10

coracoid process of scapula

Question 11

Pectoralis Minor (action)

Answer 11

depression of shoulder; downward rotation of scapula

Question 12

Pectoralis Minor (innervation)

Answer 12

medial pectoral nerve

Question 13

Serratus anterior (origin)

Answer 13

ribs 1-8 on anterolateral thoracic wall

Question 14

Serratus anterior (insertion)

Answer 14

medial border of scapula; inferior angle

Question 15

Serratus anterior (action)

Answer 15

protraction of the scapula; holds medial border against thoracic wall

Question 16

Serratus anterior (innervation)

Answer 16

long thoracic nerve

Question 17

Subclavius (origin)

Answer 17

1st rib

Question 18

Subclavius (insertion)

Answer 18

inferior surface of clavicle

Question 19

Subclavius (action)

Answer 19

stabilizes sternoclavicular joint

Question 20

Subclavius (innervation)

Answer 20

nerve to subclavius