That’s actually pretty weird, even for a nerve from your skull that innervates most of your digestive tract. The reason why it’s weird is that your embryonic hindgut (descending colon, sigmoid colon, and rectum) and most of your pelvic viscera and reproductive system get their parasympatheti...
and the waste ends up in solid form as poop. When the lower colon gets full of poop, it empties into the rectum. It usually takes about 36 hours for waste to get through the colon.
This isn’t new to science, it’s just one of the cool little quirks of human and comparative anatomy that more people should be aware of. Quick-quick background: autonomic (unconscious, involuntary) innervation of the body comes in two flavors, sympathetic and parasympathetic. Sympathetic nerve...