Shoulder Muscles

Question 1

Deltoid

Answer 1

Flexes, medially rotates, ABducts, extends & laterally rotates humerus (Does NOT ADduct) —-> Many actions

Axillary nerve

Question 2

Teres major

Answer 2

ADducts & medially rotates humerus

Lower subscapular nerve

Question 3

Supraspinatus

Answer 3

Aids deltoid in ABduction of humerus
Acts w/ other rotator cuff muscles to stabilize the shoulder

Suprascapular nerve

Question 4

Subscapularis

Answer 4

Medially rotates humerus
ADducts humerus
Helps hold humeral head in place

Upper & lower subscapular nerves

Question 5

Which is the largest and strongest rotator cuff muscle?

a. Supraspinatus
b. Infraspinatus
c. Subscapularis
d. Teres Minor

Answer 5

c. Subscapularis

Question 6

Which rotator cuff muscle is commonly injured in baseball pitchers?

a. Supraspinatus
b. Infraspinatus
c. Subscapularis
d. Teres Minor

Answer 6

c. Subscapularis

Question 7

Infraspinatus

Answer 7

Laterally rotates humerus
Helps hold humeral head in place

Suprascapular nerve

Question 8

Teres minor

Answer 8

Laterally rotates humerus
Helps hold humeral head in place

Axillary nerve