Glucagon stimulates
a) Gluconeogenesis
b) Glycogenesis
c) Fatty acid synthesis
d) Glycolysis
Correct Answer - A
Ans. ‘A’ Gluconeogenesis.
Glucagon is a polypeptide hormone that is secreted by the A cells of
the islets of Langerhans of the pancreas. It acts by increasing cAMP.
- Glucagon stimulates glycogenolysis in the liver but not in muscle.
Breakdown of glycogen yields glucose. - Glucagon stimulates the production of glucose from amino acids
(gluconeogenesis). Both glycogenolysis and gluconeogenesis tend
to raise plasma glucose levels. - Glucagon stimulates lipolysis. Breakdown of lipids yields free fatty
acids, which may be oxidized completely to carbon dioxide, or
incompletely to form ketone bodies.