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. That's 5 down. You're all set for today!