Which gland primarily produces insulin?

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Multiple Choice

Which gland primarily produces insulin?

Explanation:
Insulin is produced by the endocrine portion of the pancreas, specifically the beta cells in the islets of Langerhans. When blood glucose rises after a meal, these beta cells release insulin into the bloodstream. Insulin then promotes glucose uptake into skeletal muscle and adipose tissue, stimulates glycogen synthesis in liver and muscle, and supports fat storage, all of which lower blood glucose levels. The other glands listed have different roles—thyroid hormones regulate metabolic rate, adrenal hormones include cortisol and adrenaline, and testes produce testosterone—so the pancreatic beta cells are the source of insulin.

Insulin is produced by the endocrine portion of the pancreas, specifically the beta cells in the islets of Langerhans. When blood glucose rises after a meal, these beta cells release insulin into the bloodstream. Insulin then promotes glucose uptake into skeletal muscle and adipose tissue, stimulates glycogen synthesis in liver and muscle, and supports fat storage, all of which lower blood glucose levels. The other glands listed have different roles—thyroid hormones regulate metabolic rate, adrenal hormones include cortisol and adrenaline, and testes produce testosterone—so the pancreatic beta cells are the source of insulin.

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