Brachialis Anatomy Quiz_ Insertion, Action, Function, and more

1. Where is the brachialis located?

a. The posterior compartment of the arm

b. The anterior compartment of the arm

c. The lower leg

d. The anterior compartment of the thigh

The answer is b. The brachialis is located in the anterior compartment of the arm, and it inserts into the ulnar
tuberosity and coronoid process of the ulna.

2. The brachialis is supplied by which nerve(s)?

a. The musculocutaneous nerve

b. The radial nerve

c. Both a and b

d. None of the above

The answer is c. The brachialis muscle is innervated primarily by the musculocutaneous nerve. However, it is
also innervated by the radial nerve.

3. The word or prefix “brachi” means what?

a. Related to the foot

b. Related to the arm

c. Related to the finger

d. Something is “large”

The answer is b, arm. This word refers to something in or around the arm, so that should help you identify the
approximate location of anatomical terms with this prefix.

4. The major function of the brachialis is to flex the elbow joint.

a. True

b. False

The answer is a, true. The major function of the brachialis is elbow flexion, bringing the forearm closer to the arm
by pulling on the ulna.

5. Which statement about the brachialis muscle is incorrect?