Muscles of Shoulder

Question 1

Upper Trapezius

Answer 1

Occipital bones to outer third of clavicle

Scapular elevation and upward rotation

Question 2

Middle Trapezius

Answer 2

Spinous processes of C7-T3 to scapular spine

Scapular retraction

Question 3

Lower Trapezius

Answer 3

Spinous process of middle and lower thoracic vertebrae to base of scapular spine
Scapular depression and upward rotation

Question 4

Levator Scapula

Answer 4

Transverse process of first 4 vertical vertebrae to vertebral border of scapula between superior angle and spine
Scapular elevation and downward rotation

Question 5

Rhomboid

Answer 5

Spinous process of C7-T5 to vertebral border of scapula

Scapular retraction, elevation, and downward rotation

Question 6

Serratus Anterior

Answer 6

Lateral surface of upper 8 ribs to vertebral border of scapula (anterior surface)
Scapular protraction and upward rotation

Question 7

Pectoralis Minor

Answer 7

Anterior surface, 3rd-5th ribs to coracoid process

Scapular depression, protraction, downward rotation, and tilt

Question 8

Anterior Deltoid

Answer 8

Lateral third of clavicle to deltoid tuberosity

Shoulder abduction, flexion, medial rotation, and horizontal adduction

Question 9

Middle Deltoid

Answer 9

Acromion process to deltoid tuberosity

Shoulder abduction

Question 10

Posterior Deltoid

Answer 10

Spine of scapula to deltoid tuberosity

Shoulder abduction, extension, hyperextension, lateral rotation, horizontal abduction

Question 11

Pectoralis Major

Answer 11

Medial third of clavicle, sternum, and costal cartilage of ribs 1-6 to lateral lip of the bicipital groove of humerus
Shoulder abduction, medial rotation, horizontal adduction, flexion, and extension

Question 12

Latissimus Dorsi

Answer 12

Spinous process of T7-L5 to medial floor of bicipital groove

Shoulder extension, adduction, medial rotation, and hyperextension

Question 13

Teres Major

Answer 13

Inferior axillary border of scapula near inferior angle to medial lip of bicipital groove on anterior surface
Shoulder extension, adduction, and medial rotation

Question 14

Supraspinatus

Answer 14

Supraspinous fossa of scapula to greater tubercle

Shoulder abduction

Question 15

Infraspinatus

Answer 15

Infraspinous fossa of scapula to greater tubercle

Shoulder lateral rotation and horizontal abduction

Question 16

Teres Minor

Answer 16

Axillary border of scapula to greater tubercle

Shoulder lateral rotation and horizontal abduction

Question 17

Subscapularis

Answer 17

Subscapular fossa of scapula to lesser tubercle

Shoulder medial rotation

Question 18

Coracobrachialis

Answer 18

Coracoid process of scapula to medial surface of humerus

Stabilizes shoulder joint