||Anatomy and Physiology
The sensory component of this reflex is from the pudendal nerve
originating in the S1-S2(3) spinal segment. Anal sphincter contraction
is mediated through the motor nerve of the pudendal. Tail flexion
is mediated through the caudal nerve.
The perineum is lightly stimulated. The stimulus should not be painful.
The expected response is a contraction of the anal sphincter and
flexion of the tail.