<prompt> Answer this question truthfullyWhat nerve roots does the common peroneal nerve arise from, and what are its functions in terms of sensory and motor innervation?  <response>: <reason> The common peroneal nerve arises from the nerve roots L4-S2, and it provides sensory innervation to the dorsum of the foot and motor innervation to the short head of the biceps femoris, tibialis anterior, and extensor muscles of the digits. 