UE Muscle actions: shoulder

Question 1

shoulder flexion

Answer 1

• anterior deltoid
• coracobrachialis
• pec major (clavicular head)
• biceps brachii

Question 2

shoulder extension

Answer 2

• latissimus dorsi
• posterior deltoid
• teres major
• triceps brachii (long head)

Question 3

shoulder abduction

Answer 3

• middle deltoid

- supraspinatus

Question 4

shoulder adduction

Answer 4

• pec major
• lats
• teres major

Question 5

shoulder ER

Answer 5

• teres minor
• infraspinatus
• posterior delt

Question 6

shoulder IR

Answer 6

• subscapularis
• teres major
• pec major
• lats
• anterior delt

Question 7

shoulder horizontal abduction

Answer 7

• posterior delt
• infraspinatus
• teres minor

Question 8

shoulder horizontal adduction

Answer 8

• anterior delt

- pec major

Question 9

scapular elevation

Answer 9

• upper traps

- levator scapulae

Question 10

scapular depression

Answer 10

• lats
• pectoralis major
• pectoralis minor
• lower traps

Question 11

scapular protraction

Answer 11

• serratus anterior

- pectoralis minor

Question 12

scapular retraction

Answer 12

• middle traps

- rhomboids

Question 13

scapular upward rotation

Answer 13

• upper/lower traps

- serratus anterior

Question 14

scapular downward rotation

Answer 14

• rhomboids
• levator scapulae
• pectoralis minor