Pectoral Region Muscles

Question 1

origin of serratus anterior

Answer 1

1st to 9th ribs

Question 2

insertion of serratus anterior

Answer 2

ventral surface of scapula

Question 3

innervation of serratus anterior

Answer 3

long thoracic nerve

Question 4

action of serratus anterior

Answer 4

scapular ADduction and upward rotation

Question 5

origin of pectoralis major (clavicular part)

Answer 5

clavicle

Question 6

origin of of pectoralis major (sternocostal part)

Answer 6

sternum and costal cartilages 1-6

Question 7

origin of pectoralis major (abdominal part)

Answer 7

rectus sheath

Question 8

insertion of pectoralis major

Answer 8

humerus (crest of greater tubercle)

Question 9

innervation of pectoralis major

Answer 9

medial and lateral pectoral nerve

Question 10

action of pectoralis major

Answer 10

ADduction and internal rotation

Question 11

origin of pectoralis minor

Answer 11

3rd -5th rib

Question 12

insertion of pectoralis minor

Answer 12

coracoid process

Question 13

innervation of pectoralis minor

Answer 13

medical pectoral nerve

Question 14

action of pectoralis minor

Answer 14

draws scapula downward

Question 15

origin of subclavius

Answer 15

1st rib

Question 16

insertion of subclavius

Answer 16

clavicle

Question 17

innervation of subclavius

Answer 17

nerve to subclavius

Question 18

action of subclavius

Answer 18

steadies the clavicle in the sternoclavicular joint