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.
The liver is an essential part of the human digestive system. It is an accessory organ of the digestive system that assists with digestive processes without being directly involved with food digestion. The liver assists the digestive system by secreting bile and bile salts to help emulsify fats and aid in their digestion in the small intestine.