Name the hormone that gets activated when the stomach is empty.
Ghrelin
Ghrelin is a hormone that is secreted by the stomach when the stomach becomes empty. We feel hungry when this hormone acts upon hypothalamus. When food is taken, the secretion of ghrelin stops and the hypothalamus makes us feel full. Gastrin controls the production of gastric juices. Secretin controls the activity of the pancreas and bile is a fluid secreted by the liver that assists digestion.