Blood glucose rises after a meal. What is the correct sequence of the response?
Answer and explanation
Correct answer: C. beta cells in the pancreas release insulin, liver and muscle take up glucose, and blood glucose falls
- Step 1: Raised glucose is detected by beta cells in the islets of Langerhans.
- Step 2: Insulin is released, causing cells to take up glucose and the liver to convert it to glycogen, so levels fall (negative feedback).
Answer
beta cells in the pancreas release insulin, liver and muscle take up glucose, and blood glucose falls.
Why not the others: alpha cells in the pancreas release glucagon, the liver releases glucose, and blood glucose falls: glucagon raises blood glucose; it is released when levels are low. beta cells release insulin, the liver releases glucose, and blood glucose rises: insulin promotes glucose uptake, which lowers blood glucose. the adrenal glands release insulin, the kidney stores glucose, and blood glucose falls: insulin is made by the pancreas, not the adrenal glands.
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