Which hormone lowers blood glucose level?

Answer and explanation

Correct answer: A. Insulin

  1. Step 1: Regulation of circulating blood glucose is mediated by antagonistic endocrine hormones from the pancreas.
  2. Step 2: Insulin, synthesized and secreted by pancreatic -cells, enhances cellular glucose uptake and promotes glycogen synthesis, lowering plasma glucose concentrations.
  3. Step 3: In contrast, glucagon and adrenaline stimulate glycogenolysis to elevate blood glucose levels.
Answer
Insulin.
Why not the others: Thyroxine regulates basal metabolic rate and general tissue growth; Adrenaline stimulates hepatic glycogenolysis to raise blood glucose during stress responses; Glucagon is secreted by pancreatic -cells and acts antagonistically to raise blood glucose by stimulating glycogenolysis and gluconeogenesis.

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