The posterior interosseous nerve branching from the radial nerve (C6) innervates the _______.

Name: The posterior interosseous nerve branching from the radial nerve (C6) innervates the _______.
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The posterior interosseous nerve, a branch of the radial nerve, innervates the supinator muscle along with other muscles in the posterior compartment of the forearm. It does not innervate the biceps brachii, brachialis, or pronator teres muscles, as these are innervated by other nerves.

The Posterior Interosseous Nerve Branching from the Radial Nerve (C6)