Q.Distinguish between the actions of insulin and glucagon in regulating blood glucose level.

[!TLDR]

Insulin (beta cells) lowers blood glucose; glucagon (alpha cells) raises it -- an antagonistic pair. …

Insulin, secreted by the beta cells of the islets of Langerhans in direct response to a rise in blood glucose (as after a meal), lowers blood glucose back toward normal by promoting glucose uptake into cells (particularly muscle and fat) and by promoting glycogenesis (glycogen storage) chiefly in the liver. Glucagon, secreted by the alpha cells in response to a fall in blood glucose (as during fasting), has the opposite effect, raising blood glucose back toward normal by promoting glycogenolysis (glycogen breakdown) and gluconeogenesis (new glucose synthesis), chiefly in the liver. Because the two hormones are triggered by opposite changes in blood glucose and produce opposite effects, …

Pair each hormone with (a) the blood-glucose condition that triggers its release and (b) the direction of its effect on blood gl …

Reversing insulin and glucagon's effects -- insulin LOWERS blood glucose (secreted when glucose is high), glucagon RAISES it (secreted whe …