Anterior Axio-Appendicular Muscles

Question 1

Pectoralis Major Origin

Answer 1

medial 1/2 of the clavicle, manubrium & body of sternum, costal cartilages of ribs 2-6, sometimes from the rectus sheath of the upper abdominal wall

Question 2

Pectoralis Major Insertion

Answer 2

crest of the greater tubercle of the humerus

Question 3

Pectoralis Major Action

Answer 3

flexes and adducts the arm, medially rotates the arm

Question 4

Pectoralis Major Innervation

Answer 4

medial and lateral pectoral nerves (C5-T1)

Question 5

Pectoralis Major Artery

Answer 5

pectoral branch of the thoracoacromial trunk

Question 6

Pectoralis Minor Origin

Answer 6

ribs 3-5

Question 7

Pectoralis Minor Insertion

Answer 7

coracoid process of the scapula

Question 8

Pectoralis Minor Action

Answer 8

draws the scapula forward, medialward, and downward

Question 9

Pectoralis Minor Artery

Answer 9

thoracoacromial a.

Question 10

Pectoralis Minor Nerve

Answer 10

medial pectoral nerve

Question 11

Subclavius Origin

Answer 11

first rib and its cartilage

Question 12

Subclavius Insertion

Answer 12

inferior surface of the clavicle

Question 13

Subclavius Action

Answer 13

draws the clavicle (and hence the shoulder) down and forward

Question 14

Subclavius Artery

Answer 14

thoracoacromial

Question 15

Subclavius Nerve

Answer 15

subclavius n

Question 16

Serratus Anterior Origin

Answer 16

ribs 1-8 or 9

Question 17

Seratus Anterior Insertion

Answer 17

medial border of the scapula on its costal (deep) surface

Question 18

Seratus Anterior Action

Answer 18

it draws the scapula forward; the inferior fibers rotate the scapula superiorly

Question 19

Seratus Anterior Nerve

Answer 19

long thoracic nerve

Question 20

Seratus Anterior Artery

Answer 20

lateral thoracic a