Prime Movers of the Scapula/Shoulder

Question 1

What’re the two movements of the infraspinatus?

Answer 1

shoulder external rotation and horizontal abduction

Question 2

What is the origin of the infrapsinatus?

Answer 2

infraspinous fossa of the scapula

Question 3

What is the insertion of the infraspinatus?

Answer 3

greater tubercle of the humerus

Question 4

What is the movement of the supraspinatus?

Answer 4

assists with shoulder abduction

Question 5

What is the origin of the supraspinatus?

Answer 5

supraspinous fossa of the scapula

Question 6

What is the insertion of the supraspinatus ?

Answer 6

greater tubercle of the humerus

Question 7

What’re the two movements of the rhomboid major?

Answer 7

adduction and rotation of the scapula downward

Question 8

What is the origin of the rhomboid major?

Answer 8

T2-T5

Question 9

What is the insertion of the rhomboid major?

Answer 9

lower half of the posterior medial border of the scapula

Question 10

What are the two movements of the rhomboid minor?

Answer 10

adduction and scapular downward rotation

Question 11

what is the origin of the rhomboid minor?

Answer 11

C7-T1

Question 12

What is the insertion of the rhomboid minor?

Answer 12

medial border of the scapula at the level of the spine

Question 13

What’re the two movements of the Pectorlais major at the humerus ?

Answer 13

adduction and internal rotation

Question 14

What’re the two movements of the pec major at the scapula?

Answer 14

draws anteriorly and inferiorly

Question 15

what is the origin of the pec major at the clavicular head?

Answer 15

anterior surface of medial half of clavicle

Question 16

what are the four origins of the pec major at the sternocostal head ?

Answer 16

anterior surface of the sternum and superior six costal cartilages and the aponeurosis of the external oblique.

Question 17

what is the insertion of the pec major?

Answer 17

lateral lip of the biccipial groove of the humerus

Question 18

What is the movement of the subscapularis?

Answer 18

shoulder internal rotation

Question 19

what is the origin of the subscapularis?

Answer 19

subscapular fossa of the scapula

Question 20

what is the insertion of the subscapularis ?

Answer 20

lesser tubercle of the humerus

Question 21

what is the movement of the coracobrachialis ?

Answer 21

assists with flexion and adduction of the shoulder

Question 22

What is the origin of the coracobrachialis?

Answer 22

coracoid process of the scapula

Question 23

what is the insertion of the coracobrachialis ?

Answer 23

medial surface of the humerus near the mid-point

Question 24

What is the movement of the anterior deltoid?

Answer 24

shoulder flexion

Question 25

what is the origin of the anterior deltoid?

Answer 25

lateral third of clavicle

Question 26

what is the insertion of the anterior deltoid?

Answer 26

deltoid tuberosity