Which of the following is NOT considered a muscle of the forearm?

• A. Brachialis
• B. Pronator teres
• C. Extensor carpi radialis longus
• D. Flexor digitorum superficialis

Answer: (A)

Verified step by step guidance

1. Step 1: Understand the anatomy of the forearm muscles by dividing them into anterior (flexor) and posterior (extensor) compartments. The forearm muscles primarily control movements of the wrist, hand, and fingers.
2. Step 2: Identify the muscles listed in the problem and classify them based on their location and function. For example, Pronator teres is an anterior forearm muscle involved in pronation of the forearm.
3. Step 3: Recognize that Extensor carpi radialis longus is a posterior forearm muscle responsible for wrist extension and abduction, and Flexor digitorum superficialis is an anterior forearm muscle that flexes the fingers.
4. Step 4: Recall that the Brachialis muscle is located in the arm (brachium), not the forearm. It primarily acts to flex the elbow joint and lies deep to the biceps brachii.
5. Step 5: Conclude that since Brachialis is not located in the forearm but in the arm, it is NOT considered a muscle of the forearm, unlike the other options.