GENERAL HISTOLOGY

LIVER PANCREAS

PANCREAS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Glucagon is ____
A
Peptide hormone
B
polypeptide
C
enzyme
D
None of the above
Explanation: 

Detailed explanation-1: -Glucagon is a peptide hormone secreted from the alpha cells of the pancreatic islets of Langerhans. Hypoglycemia is physiologically the most potent secretory stimulus and the best known action of glucagon is to stimulate glucose production in the liver and thereby to maintain adequate plasma glucose concentrations.

Detailed explanation-2: -Glucagon is a peptide hormone, produced by alpha cells of the pancreas. It raises concentration of glucose and fatty acids in the bloodstream, and is considered to be the main catabolic hormone of the body.

Detailed explanation-3: -Glucagon Structure Glucagon is produced by proglucagon and is encoded by the GCG gene. It is a 29-amino acid polypeptide and has a molecular mass of 3485 Daltons. As a peptide hormone, this means it is considered a non-steroid.

Detailed explanation-4: -Insulin is a protein chain or peptide hormone. There are 51 amino acids in an insulin molecule. It has a molecular weight of 5808 Da. Insulin is produced in the islets of Langerhans in the pancreas.

Detailed explanation-5: -Glucagon-like peptide-1 (GLP-1) is a peptide of 30 amino acids, which is formed from proglucagon, the precursor of the well-known pancreatic hormone, glucagon [1].

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