Which of the listed muscles is innervated by the deep branch of the radial nerve? A) Extensor carpi radialis longus B) Brachioradialis C) Extensor carpi ulnaris D) Supinator
Understand the Problem
The question is asking for identification of a specific muscle that is innervated by the deep branch of the radial nerve from the options provided. The focus is on understanding the anatomy and innervation of muscles in the forearm.
Answer
Supinator
The deep branch of the radial nerve innervates the supinator.
Answer for screen readers
The deep branch of the radial nerve innervates the supinator.
More Information
The supinator muscle, along with the extensor carpi radialis brevis, receives innervation from the deep branch of the radial nerve. This branch is responsible for innervating muscles that primarily function to extend and rotate the forearm.
Tips
A common mistake is confusing the superficial and deep branches of the radial nerve, which innervate different muscles. It's important to distinguish between these branches based on the specific muscles they serve.
Sources
- Radial nerve - Wikipedia - en.wikipedia.org
- Radial Nerve - an overview | ScienceDirect Topics - sciencedirect.com
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