SHOULDER MUSCLES LIST

Question 1

actions of supraspinatus

Answer 1

abducts arm

Question 2

actions of infraspinatus

Answer 2

adducts and laterally rotates arm

Question 3

actions of teres major

Answer 3

extends, adducts and medially rotates arm

Question 4

actions of deltoid

Answer 4

flex and medially rotate arm. Prime mover of arm abduction. Extend and laterally rotate arm

Question 5

actions of subscapularis

Answer 5

medially rotates arm

Question 6

actions of pectorals major

Answer 6

agonist of arm flexion; also adducts and medially rotates arm

Question 7

actions of trapezius

Answer 7

elevate and superiorly rotate scapula, retract and depress scapula

Question 8

actions of latissimus dorsi

Answer 8

agonist of arm extension, also adducts and medially rotates arm

Question 9

actions of teres minor

Answer 9

adducts and laterally rotates arm

Question 10

origins of supraspinatus

Answer 10

supraspinous fossa of scapula

Question 11

origins of infraspinatus

Answer 11

infraspinous fossa of scapula

Question 12

origins of teres major

Answer 12

posterior aspect of inferior angle of scapula

Question 13

origins of teres minor

Answer 13

lateral border of scapula

Question 14

origins of deltoid

Answer 14

clavicle, acromion and spine of scapula

Question 15

origins of subscapularis

Answer 15

subscapular fossa

Question 16

origins of pectoralis major

Answer 16

anterior border of medial half of clavicle, anterior surface of sternum, superior six costal cartilages

Question 17

origins of pectoralis minor

Answer 17

3-5 rib

Question 18

origins of rhomboid major

Answer 18

spines process of T2-T5

Question 19

origins of rhomboid minor

Answer 19

nuchal ligaments of and spinous process of C& and T1

Question 20

origins of trapezius

Answer 20

spinous process of C1-T12

Question 21

origins of latissimus dorsi

Answer 21

spinous process of T7-T5, thoracolumbar fascia, iliac crest, inferior 3 or 4 ribs, inferior angle of scapula

Question 22

insertions of supraspinatus

Answer 22

superor facet of greater tubercle of humerus

Question 23

insertions of infraspinatus

Answer 23

middle facet of greater tubercle of humerus

Question 24

insertions of teres major

Answer 24

medial lip of inter tubercular sulcus of humerus

Question 25

insertions of teres minor

Answer 25

inferior facet of greater tubercle of humerus

Question 26

insertions of deltoid

Answer 26

deltoid tuberosity

Question 27

insertions of subscapularis

Answer 27

lesser tubercle of humerus

Question 28

insertions of pectoralis major

Answer 28

lateral lip of bicipital groove of humerus

Question 29

insertions of pectoralis minor

Answer 29

coracoid process

Question 30

insertions of rhomboid major

Answer 30

medial border of scapula

Question 31

insertions of rhomboid minor

Answer 31

medial border of scapula

Question 32

insertions of trapezius

Answer 32

external occipital protuberance, nuchal ligament, medial superior nuchal line, posterior border of lateral third of the clavicle, acromion process, spine of scapula

Question 33

insertions of latissimus dorsi

Answer 33

intertubercular groove of humerus