Once home, I googled autism awareness, bumper sticker, and entered a whole world of autism products. Bumper stickers, of course. But also tee shirts, jewelry, stickers (I am someone with autism), mugs. Eventually, I exited even more perplexed than I entered.
In general, the digestive system is controlled by both nerves and hormones. The nerves that control digestion are in the submucosa layer of the tissue and in between the muscle layers of the walls of the organ.
These hormones control many important functions in the body, including 1  : Maintaining metabolic processes, such as managing blood sugar levels and regulating inflammation. 2  Regulating the balance of salt and water. 3  Controlling the fight or flight response to stress. 4  Maintaining pregnancy.