Question

what is the best muscle test for c5?
○ biceps
○ deltoids
○ extensor carpi radialis
○ triceps

Explanation:

C5 spinal nerve innervates the deltoid muscle, making deltoid strength testing the primary method to assess C5 function. Biceps are linked to C5-C6, extensor carpi radialis to C6, and triceps to C7.

Answer:

Deltoids