Question

Somatostatin is secreted by

• A. Alpha cells
• B. Beta cells
• C. Delta cells
• D. F cells

Answer 1

Answer:

C. Delta cells

Somatostatin (SST) is secreted by Delta cells and by extraislet neuroendocrine cells. SST receptors have been identified on α- and β-cells, and exogenous SST inhibits insulin and glucagon secretion, consistent with a role for SST in regulating α- and β-cell function.