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Figure 1 :Micturition refl ex pathways as outlined by deGroat. Note that the A-delta fi bers and C-fi bers provide afferent signaling to the brain as the bladder fi lls. The brain, in turn, signals spinal pathways, resulting in a "turning off" of the guarding refl ex, relaxation of the external urethral sphincter, contraction of the detrusor, and voluntary voiding of urine

Figure 1 :Micturition refl ex pathways as outlined by deGroat. Note that the A-delta fi bers and C-fi bers provide afferent signaling to the brain as the bladder fi lls. The brain, in turn, signals spinal pathways, resulting in a