Anterior Axio-appendicular Muscles

Question 1

Pectoralis major (clavicular head) - P

Answer 1

anterior surface of medial half of clavicle

Question 2

Pectoralis major (sternocostal head) - P

Answer 2

anterior surface of sternum, superior six costal cartilages, aponeurosis of external oblique muscle

Question 3

Pectoralis major - D

Answer 3

lateral lip of intertubercular sulcus (bicipital groove) of humerus deep to biceps tendon

Question 4

Pectoralis major - N

Answer 4

lateral and medial pectoral nerves

Question 5

Pectoralis major - A

Answer 5

shoulder adduction
shoulder medial rotation
draws scapula anteriorly and inferiorly (scapular stabilization)
clavicular head alone: shoulder flexion
sternocostal head alone: shoulder extension from flexed position

Question 6

Pectoralis minor - P

Answer 6

3rd-5th ribs near their costal cartilages

Question 7

Pectoralis minor - D

Answer 7

coracoid process of scapula

Question 8

Pectoralis minor - N

Answer 8

medial pectoral nerve

Question 9

Pectoralis minor - A

Answer 9

stabilizes scapula by drawing it anteriorly and inferiorly against the thoracic wall

Question 10

Subclavius - P

Answer 10

junction of 1st rib and its cartilage

Question 11

Subclavius - D

Answer 11

inferior surface of middle third of clavicle

Question 12

Subclavius - N

Answer 12

subclavian nerve

Question 13

Subclavius - A

Answer 13

anchors and depresses clavicle

Question 14

Serratus anterior - P

Answer 14

external surfaces of lateral parts of 1st-8th ribs

Question 15

Serratus anterior - D

Answer 15

anterior surface of medial border of scapula

Question 16

Serratus anterior - N

Answer 16

long thoracic nerve

Question 17

Serratus anterior - A

Answer 17

scapular protraction
holds scapula against thoracic wall/stabilization
scapular rotation
(weakness causes scapular winging)