A) Glucagon ? Beta cells (source)
B) Somatostatin ? Delta cells (source)
C) Corpus luteum ? Relaxin (secretion)
D) Insulin ? Diabetes mellitus (disease)
Correct Answer: A
Solution :
In pancreatic islets, alpha or A-cells constitute about 15% of pancreatic islets cells and secrete glucagon. Its molecule consists of a single polypeptide chain of 29 amino acid residues. Glucagon intensifies glycogenolysis, deamination and gluconeogenesis, and inhibits glycogenesis in liver cells. It also intensifies lipolysis in adipose tissue. Thus, it is a promoter of cataholic metabolism.
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