Describe this topic:
Glucagon acts mainly on the liver cells (hepatocytes) and stimulates glycogenolysis resulting in increased blood sugar (hyperglycemia).

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Solution

Glucagon is a protein hormone that is produced by the pancreatic islets of Langerhans and promotes an increase in blood glucose by increasing the rate of glycogen breakdown in the liver.

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Similar questions

Assertion [A]: Glucagon is said to lower the blood sugar level.

Reason [R]: Glucagon increases the utilization of glucose in the tissues and glycogen in liver.

Column I	Column II
(i) $ρ$ - cells	(a) It stimulates glycogenolysis
(ii) $β$ - cells	(b) It secrete somatostatin
(iii) a - cells	(c) Increases cellular glucose uptake and utilisation
	(d) Rise in blood pressure and blood volume

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