Multiple Choice
Which structure forms the endocrine portion of the pancreas?
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23. The Digestive System
Pancreas
Multiple Choice
Which pancreatic hormone supports blood glucose levels by promoting glycogen breakdown and gluconeogenesis?
A
Insulin
B
Somatostatin
C
Pancreatic polypeptide
D
Glucagon
Verified step by step guidance1
Step 1: Understand the role of pancreatic hormones in blood glucose regulation. The pancreas secretes several hormones, each with distinct effects on glucose metabolism.
Step 2: Recall that insulin lowers blood glucose by promoting glucose uptake and storage as glycogen, so it does not support increasing blood glucose levels.
Step 3: Recognize that somatostatin primarily acts as an inhibitory hormone, regulating the secretion of other hormones rather than directly affecting blood glucose levels.
Step 4: Identify that pancreatic polypeptide mainly regulates pancreatic secretions and gastrointestinal functions, not blood glucose.
Step 5: Conclude that glucagon is the hormone that supports blood glucose levels by promoting glycogen breakdown (glycogenolysis) and the formation of new glucose (gluconeogenesis) in the liver, thus increasing blood glucose.
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