Which of the following muscles is NOT innervated by the median nerve in the forearm?

Explanation

## Median Nerve Innervation in the Forearm **Key Point:** The median nerve innervates most of the flexor muscles of the forearm, but the flexor carpi ulnaris is an exception — it is innervated by the **ulnar nerve**. ### Median Nerve Motor Branches (Forearm) The median nerve provides motor innervation to: | Muscle | Origin | Action | Nerve Supply | |--------|--------|--------|---------------| | Pronator teres | Medial epicondyle, coronoid process | Pronation | Median nerve | | Flexor carpi radialis | Medial epicondyle | Wrist flexion, radial deviation | Median nerve | | Palmaris longus | Medial epicondyle | Wrist flexion | Median nerve | | Flexor digitorum superficialis | Medial epicondyle, radius, ulna | Finger flexion (PIP) | Median nerve | | Flexor pollicis longus | Anterior radius, interosseous membrane | Thumb IP flexion | Anterior interosseous nerve (branch of median) | | Pronator quadratus | Anterior ulna | Pronation | Anterior interosseous nerve (branch of median) | ### Ulnar Nerve Innervation (Forearm) - **Flexor carpi ulnaris** — ulnar deviation and wrist flexion - **Flexor digitorum profundus** (medial half) — DIP flexion of digits 4–5 **Mnemonic:** **LOAF** (Lateral muscles of forearm) — **L**ateral half of flexor digitorum profundus, **O**pponens pollicis, **A**dductor pollicis, **F**lexor pollicis brevis. These are intrinsic hand muscles innervated by median nerve (recurrent branch). **High-Yield:** Flexor carpi ulnaris is the only wrist flexor innervated by the **ulnar nerve**, not the median nerve. This is a classic NEET PG trap.