Muscles from the Pectoral Girdle to the Humerus

Question 1

Teres major origin?

Answer 1

Inferior angle of scapula

Question 2

Teres major insertion?

Answer 2

Crest of lesser tubercle of humerus

Question 3

Teres major action?

Answer 3

Extends, adducts, medially rotates shoulder

Question 4

Deltoid origin?

Answer 4

Acromial end of clavicle, acromion and spine of scapula

Question 5

Deltoid insertion?

Answer 5

Deltoid tuberosity of humerus

Question 6

Deltoid action?

Answer 6

Anterior: Flexes shoulder jt.
Lateral: Abducts shoulder jt.
Posterior: Extends shoulder jt.

Question 7

Deltoid innervation?

Answer 7

Axillary n.

Question 8

Subscapularis origin?

Answer 8

Subscapular fossa

Question 9

Subscapularis insertion?

Answer 9

Lesser tubercle of humerus

Question 10

Subscapularis action?

Answer 10

Medially rotates shoulder

Question 11

Supraspinatus origin?

Answer 11

Supraspinous fossa

Question 12

Supraspinatus insertion?

Answer 12

Greater tubercle of humerus

Question 13

Supraspinatus action?

Answer 13

Abducts shoulder

Question 14

Infraspinatus origin?

Answer 14

Infraspinous fossa

Question 15

Infraspinatus insertion?

Answer 15

Greater tubercle of humerus

Question 16

Infraspinatus action?

Answer 16

Laterally rotates shoulder

Question 17

Teres minor origin?

Answer 17

Lateral border of scapula

Question 18

Teres minor insertion?

Answer 18

Greater tubercle of humerus

Question 19

Teres minor action?

Answer 19

Laterally rotates shoulder

Question 20

Teres minor innervation?

Answer 20

Axillary n.