Posterior Compartment of the Arm

Question 1

What is the muscle in the posterior compartment of the arm?

Answer 1

Triceps brachii

Question 2

What is the muscle in the posterior compartment of the arm innervated by?

Answer 2

Radial nerve
(Note : the muscle is triceps brachii)

Question 3

What is the action of the muscle in the posterior compartment of the arm?

Answer 3

Extension of arm and forearm
(Note : the muscle is triceps brachii)