Which reflex corresponds to the spinal levels C5 and C6?

The reflex that corresponds to the spinal levels C5 and C6 is the biceps reflex, not the brachioradialis reflex. The biceps reflex is tested by tapping the biceps tendon at the elbow, which assesses the integrity of the C5 and C6 nerve roots.

The quadriceps reflex is associated with the L2-L4 spinal levels, primarily testing the patellar tendon. The triceps reflex, on the other hand, correlates with the C6 and C7 levels but is primarily a response at C7. The brachioradialis reflex operates at the C5 and C6 levels, though it is more commonly associated with the C6 level specifically.

In the context of this question, it’s critical to note both the specific testing method and the nerve roots being examined to accurately identify the reflex linked to C5 and C6. The biceps reflex is the correct answer as it directly involves these spinal levels and is the classical reflex associated with this region.