Motions of Shoulder and Muscles Involved

Question 1

What Muscles Cause Flexion

Answer 1

Pec Major, Middle and Anterior Deltoid, Assisting Muscles are Bicep Brachii, Coracobrachialis

Question 2

What Muscles Cause Extension

Answer 2

Latissimus Dorsi, Posterior Deltoid, Assisting Muscles are Teres Major and Long Head of Tricep

Question 3

What Muscles Cause Abduction

Answer 3

Supraspinatus, Posterior Deltoid

Question 4

What Muscles Cause Adduction

Answer 4

Pectoralis Major, Latissimus Dorsi, Anterior Deltoid, Assisting Muscles Triceps Brachii, Coracobrachialis, Teres Major

Question 5

What Muscles Cause Internal Rotation

Answer 5

Subscapularis, Latissimus Dorsi, Anterior Deltoid, Assisting Muscles Pectoralis Major, Teres Major

Question 6

What Muscles Cause External Rotation

Answer 6

Infraspinatus, Teres Minor, Posterior Deltoid

Question 7

What Muscles Cause Horizontal Abduction

Answer 7

Teres Minor, Posterior Deltoid, Assisting is Infraspinatous

Question 8

What Muscles Cause Horizontal Adduction

Answer 8

Pectoralis Major and Anterior Deltoid