Summary of muscles based on movement

Question 1

Which muscles are involved in ABDUCTION of the shoulder? (4)

Answer 1

• Supraspinatous 0-15°
• Deltoid 15-90°
• Trapezius and Serratus interior >90°

Question 2

Which muscles are involved in ADDUCTION of the shoulder? (3)

Answer 2

• Pectoralis major (sternal head)
• Latissimus dorsi
• Teres major

Question 3

Which muscles are involved in FLEXION of the shoulder? (4)

Answer 3

• Anterior fibres of Deltoid
• Pectoralis major (clavicular head)
• Coracobrachialis
• Biceps brachii

Question 4

Which muscles are involved in EXTENSION of the shoulder? (3)

Answer 4

• Posterior fibres of deltoid
• Latissimus dorsi
• Teres major

Question 5

Which muscles are involved in INTERNAL (MEDIAL) ROTATIOn of the shoulder? (4)

Answer 5

• Subscapularis
• Teres major
• Pectroralis major (sternal head)
• Latissimus dorsi

Question 6

Which muscles are involved in EXTERNAL ROTATION of the shoulder? (2)

Answer 6

• Infraspinatous

- Teres minor