Which statement about insulin is correct?
Answer and explanation
Correct answer: A. It is released by beta cells of the pancreatic islets and lowers blood glucose
- Step 1: Beta cells of the islets of Langerhans secrete insulin when blood glucose is high. Step 2. Insulin promotes glucose uptake and storage as glycogen, so blood glucose falls. Answer: It is released by beta cells of the pancreatic islets and lowers blood glucose. Why not the others: Alpha cells make glucagon, which raises glucose; the adrenal cortex does not secrete insulin.
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