Which cells produce glucagon and what is its function? 1.Beta cells and lower bl

Question

Which cells produce glucagon and what is its function?

   1.Beta cells and lower blood glucose

   2.Alpha cells and raise blood glucose

   3.Delta cells and inhibit alpha and beta cells

   4.PP cells and inhibit somatostatin secretions

The pancreatic islets produce __________.      
1-Pancreatin      
2-ACTH and aldosterone      
3-Insulin and glucagon
4-Pancreatic digestive enzymes

Amylin complements the action of insulin by…
1-Suppressing glucagon secretion
2-Increasing gastric emptying
3-Increasing postprandial glucagon
4-Increasing appetite

Which of the following hormones is produce in the L-cells of the intestine?  
1-Insulin
2-Incretins
3-Glucagon  
4-Amylin

Which of the following metabolic pathways is stimulated by glucagon?  
1-Gluconeogenesis
2-Glycolysis
3-Glycogenesis
4-Lipogenesis

Explanation / Answer

A) Glucagon is a peptide hormone, produced by alpha cells of the pancreas. It works to raise the concentration of glucose in the bloodstream.

So answer is 2

B) Hormones produced in the pancreatic islets are secreted directly into the bloodstream by five different types of cells. The alpha cells produce glucagon, and make up 15–20% of total islet cells. The beta cells produce insulin and make up 65–80% of the total islet cells.

So answer is 3

C) Amylin suppresses post-prandial glucagon secretion,thereby decreasing glucagon-stimulated hepatic glucose output following nutrient ingestion. This suppression of post-prandial glucagon secretion is postulated to be centrally mediated via efferent vagal signals.

So answer is 1

D) L cells secrete glucagon-like peptide-1, an incretin, pancreatic peptide YY3-36, oxyntomodulin and glucagon-like peptide-2. L cells are primarily found in the ileum and large intestine (colon), but some are also found in the duodenum and jejunum.

So answer is 2

E)Glucagon stimulates glycogenolysis and
gluconeogenesis in the liver and inhibits glycogen synthesis and glycolysis.

So answer is 1

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