Question

Outline the functions of the following hormones in relation to digestion and/or the maintenance of metabolic balance: gastrin, cholecystokinin (CCK), insulin, glucagon and leptin.

Answer 1

Please look in the table for the functions of hormones:

Hormones	Functions
Gastrin	G cells secretes gastrin. G cells are found in the pyloric of stomach and dudoneum. This gastrin is responsible for release of HCl from the parietal or oxyntic cells of the stomach.
Cholecystokinkn(CCK)	The mucosal epithelial cells of small intestine secretes CCK. It stimulates the release of gall baldder juice and pancreatic enzymes in the small intestine.
Insulin	Insulin is secreted by the beta cells of pancreas. It controls the glucose metabolism by converting glucose to the glycogen via glycogenesis.
Glucagon	It is secreted by the alpha cells of pancreas. It controls the glycosw metabolism by converting glycogen to glucose via glyconeolysis.
Leptin	This is released by the adipose tissue. It stimulates hypothalamus. This leads to increase food intake and stimulates appetite. It helps to maintain the normal weight of the body.

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