define glucagon, What is the source and function og glucagon?
Glucagon is hormone secreted by pancreas. Its main function is just opposite to insulin i.e to increase the blood glucose level by-(i) accelerating the breakdown glycogen into glucose in liver,(ii) by promoting the conversion of other nutrients such as amino acids & lactic acids into glucose in liver & thereby enhances the release of glucose in blood.
@Monu:- Good answer, keep posting!!
Glucagon, a hormone secreted by the pancreas, raises blood glucose levels. Its effect is opposite that of insulin, which lowers blood glucose levels. The pancreas releases glucagon when blood sugar (glucose) levels fall too low. Glucagon causes the liver to convert stored glycogen into glucose, which is released into the bloodstream. High blood glucose levels stimulate the release of insulin. Insulin allows glucose to be taken up and used by insulin-dependent tissues. Thus, glucagon and insulin are part of a feedback system that keeps blood glucose levels at a stable level. Glucagon belongs to a family of several other related hormones.
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