Muscle Anatomy - Action (Prime Movers - Shoulder Joint)

Question 1

What are the prime movers in the shoulder joint action of Flexion?

Answer 1

• Anterior Deltoid

- Pectoralis Major (clavicular - approx. 60 degrees)

Question 2

What are the prime movers in the shoulder joint action of Extensions?

Answer 2

• Posterior Deltoid
• Latissimus Dorsi
• Teres Major
• Pectoralis Minor (sternal - approx 120 deg)

Question 3

What are the prime movers in the shoulder joint action of Hyperextension?

Answer 3

• Latissimus Dorsi

- Posterior Deltoid

Question 4

What are the prime movers in the shoulder joint action of Abduction?

Answer 4

• Deltoid

- Supraspinatus

Question 5

What are the prime movers in the shoulder joint action of Adduction?

Answer 5

• Pectoralis Major
• Teres Major
• Latissimus Dorsi

Question 6

What are the prime movers in the shoulder joint action of H. Abduction?

Answer 6

• Posterior Deltoid
• Infraspinatus
• Teres Minor

Question 7

What are the prime movers in the shoulder joint action of H.Adduction?

Answer 7

• Pectoralis Major

- Anterior Deltoid

Question 8

What are the prime movers in the shoulder joint action of Lateral Rotation?

Answer 8

• Infraspinatus
• Teres Minor
• Posterior Deltoid

Question 9

What are the prime movers actions in the Shoulder Joint?

Answer 9

• Flexion
• Extension
• Hyperextension
• Abduction
• Adduction
• H. Abduction
• H. Adduction
• Lateral Rotation
• Medial Rotation

Question 10

What are the prime movers in the shoulder joint action of Medial Rotation?

Answer 10

• Latissimus Dorsi
• Teres Major
• Subscapularis
• Pectoralis Major
• Anterior Deltoids