these results indicate that the colonic units are enhanced through a spinal reflex by the inflows from the distal colon , rectum , anal canal , and urinary bladder through the lumbar colonic , hypogastric , pelvic , and pudendal nerves , while a few are inhibited through a supraspinal reflex by inflows through the pelvic and pudendal nerves .
C0227411
anal canal
C0030797
pelvic