Chapter 3 - Major Muscles that Act at the Shoulder

Question 1

Pectoralis Major
1 - What are it’s primary functions?
2 - List the selected exercises that affect it.

Answer 1

1 - Flexion, extension, adduction, internal rotation, and horizontal adduction

2 - Push ups, pull ups, incline bench press, regular bench press, climbing a rope, all types of throwing, or tennis serve

Question 2

Deltoid
1 - What are it’s primary functions?
2 - List the selected exercises that affect it.

Answer 2

1-
Entire Muscle, Abduction

Anterior Fibers: Flexion, internal rotation, and horizontal abduction

2 - Lateral Raise (abduction) exercises, anterior deltoid has similar functions to pectoralis major

Question 3

Latissimus Dorsi
1 - What are it’s primary functions?
2 - List the selected exercises that affect it.

Answer 3

1 - Extension, adduction, horizontal abduction, and internal rotations
2 - Chin ups, rope climbing, dips on parrallel bars, rowing, any exercise that involves pulling the arms downward against resistance (lat pull downs on exercise maching)

Question 4

Rotator Cuff
1 - What are it’s primary functions?
2 - List the selected exercises that affect it.

Answer 4

1 -
Infraspinatus + teres minor: external rotation

Subcapularis: internal rotation

Supraspinatus: abduction

All contribute you to the stability of the humeral head

2 - Exercises that involve internal and external rotation (tennis serve and throwing a baseball)

Question 5

Teres Major
1 - What are it’s primary functions?
2 - List the selected exercises that affect it.

Answer 5

1 - Extension, adduction and internal rotation
2 - Chin ups, seated rows , lat pull downs, rope climbing

Question 6

Add Abduction vs Adduction Graphic