LECTURE 3 muscles of the thorax

Question 1

origin of pectoralis major

Answer 1

sternum, clavicle, ribs 2-6

Question 2

insertion of pectoralis major

Answer 2

intertubercular groove of humerus

Question 3

action of pectoralis major

Answer 3

adduct, flex, medially rotate arm

Question 4

innervation of pectoralis major

Answer 4

M & L pectorals

Question 5

origin of pectoralis minor

Answer 5

ribs 3-5

Question 6

insertion of pectoralis minor

Answer 6

coracoid process of scapula

Question 7

action of pectoralis minor

Answer 7

depress, rotate scapula

Question 8

innervation of pectoralis minor

Answer 8

M & L pectorals

Question 9

origin of serratus ventralis

Answer 9

ribs 1-9

Question 10

insertion of serratus ventralis

Answer 10

scapula

Question 11

action of serratus ventralis

Answer 11

protract, rotate scapula

Question 12

innervation of serratus ventralis

Answer 12

long thoracic

Question 13

origin of levator scapula

Answer 13

c1-c4

Question 14

insertion of levator scapula

Answer 14

medial border of scapula

Question 15

action of levator scapula

Answer 15

elevate scapula

Question 16

innervation of levator scapula

Answer 16

D scapular

Question 17

origin of rhomboideus minor

Answer 17

c7-t1

Question 18

insertion of rhomboideus minor

Answer 18

medial border of scapula

Question 19

action of rhomboideus minor

Answer 19

adduct, elevate, rotate scapula

Question 20

innervation of rhomboideus minor

Answer 20

D scapular

Question 21

origin of rhomboideus major

Answer 21

t2-t5

Question 22

insertion of rhomboideus major

Answer 22

medial border of scapula

Question 23

action of rhomboideus major

Answer 23

adduct, elevate, rotate scapula

Question 24

innervation of rhomboideus major

Answer 24

d scapular

Question 25

origin of teres major

Answer 25

inferior angle of scapula

Question 26

insertion of teres major

Answer 26

intertubercular groove of humerus

Question 27

action of teres major

Answer 27

medially rotate, extend arm

Question 28

innervation of teres major

Answer 28

subscapular

Question 29

origin of trapezius

Answer 29

ligamentum nuchae, c7-t12

Question 30

insertion of trapezius

Answer 30

clavicle, spine of scapula

Question 31

action of trapezius

Answer 31

elevate, adduct, rotate, depress scapula

Question 32

innervation of trapezius

Answer 32

accessory

Question 33

origin of latissimus dorsi

Answer 33

iliac crest, t7-t12, lumbar fascia

Question 34

insertion of latissimus dorsi

Answer 34

intertubercular groove of humerus

Question 35

action of latissimus dorsi

Answer 35

extend, medially rotate, adduct arm

Question 36

innervation of latissimus dorsi

Answer 36

thoracodorsal

Question 37

origin of deltoids

Answer 37

lateral clavicle, spine and acromion of scapula

Question 38

insertion of deltoids

Answer 38

deltoid tuberosity of humerus

Question 39

action of deltoids

Answer 39

abduct, flex, extend, rotate arm

Question 40

innervation of deltoids

Answer 40

axillary

Question 41

origin of supraspinatus

Answer 41

supraspinous fossa of scapula

Question 42

insertion of supraspinatus

Answer 42

greater tubercle of humerus

Question 43

action of supraspinatus

Answer 43

abduction of arm

Question 44

innervation of supraspinatus

Answer 44

suprascapular

Question 45

origin of infraspinatus

Answer 45

infraspinous fossa of scapula

Question 46

insertion of infraspinatus

Answer 46

greater tubercle of humerus

Question 47

action of infraspinatus

Answer 47

lateral rotation of arm

Question 48

innervation of infraspinatus

Answer 48

suprascapular

Question 49

origin of teres minor

Answer 49

lateral border of scapula

Question 50

insertion of teres minor

Answer 50

greater tubercle of humerus

Question 51

action of teres minor

Answer 51

lateral rotation of arm

Question 52

innervation of teres minor

Answer 52

axillary

Question 53

origin of subscapularis

Answer 53

subscapular fossa of scapula

Question 54

insertion of subscapularis

Answer 54

lesser tubercle of humerus

Question 55

action of subscapularis

Answer 55

medial rotation of arm

Question 56

innervation of subscapularis

Answer 56

subscapular