Which spinal nerve segments primarily mediate the brachioradialis reflex?

The correct answer is B. C6.

• The brachioradialis reflex is a deep tendon reflex that tests the integrity of the spinal nerve roots.
• This reflex is primarily mediated by the C5 and C6 spinal nerve segments. An absence of this reflex suggests a potential issue with these nerve roots or their corresponding pathways.

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