Shoulder Anatomy and Upper Extremities Muscles

Which joint connects the clavicle and the scapula?

• sternoclavicular joint

• glenohumeral joint

• elbow joint

• acromioclavicular joint

Which joint allows for the most movement in the shoulder?

• acromioclavicular joint

• coracoclavicular joint

• sternoclavicular joint

• glenohumeral joint

Which muscle is responsible for abduction of the arm?

• pectoralis major muscle

• deltoid muscle

• biceps brachii muscle

• triceps brachii muscle

Which muscle is responsible for adduction of the arm?

• trapezius

• deltoid

• pectoralis major

• biceps brachii

Which muscle is responsible for flexion of the arm?

• biceps brachii

• deltoid

• triceps brachii

• pectoralis major

Which muscle is responsible for extension of the arm?

• pectoralis major

• deltoid

• triceps brachii

• biceps brachii

Which muscle is responsible for internal rotation of the arm?

• deltoid muscle

• trapezius muscle

• pectoralis major muscle

• subscapularis muscle

Which muscle is responsible for external rotation of the arm?

• Pectoralis major

• Infraspinatus

• Teres major

• Deltoid

Which muscle is responsible for flexion of the arm?

• pectoralis major

• biceps brachii

• triceps brachii

• deltoid

Which muscle is responsible for extension of the arm?

• triceps brachii

• biceps brachii

• deltoid

• pectoralis major