Muscle Functions Quiz

Which muscle is the prime extensor and adductor of the arm, and also medially rotates the arm?

• Latissimus dorsi

• Deltoid

• Supraspinatus

• Teres major

Which muscle initiates the abduction of the arm?

• Infraspinatus

• Teres minor

• Supraspinatus

• Anconeus

Which muscle extends, medially rotates, and adducts the arm?

• Latissimus dorsi

• Triceps brachii

• Deltoid

• Teres major

Which muscle rotates the arm laterally?

• Triceps brachii

• Latissimus dorsi

• Teres minor

• Anconeus

Which muscle weakly extends the forearm?

• Infraspinatus

• Supraspinatus

• Anconeus

• Teres major