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NDA 2016 GAT · General Knowledge · Human Physiology · medium

Insulin is secreted by which of the following, and its deficiency causes diabetes mellitus?

Single correct option

Insulin is secreted by which of the following, and its deficiency causes diabetes mellitus?
  1. A. Alpha cells of islets of Langerhans in the pancreas
  2. B. Thyroid gland
  3. C. Adrenal cortex
  4. D. Beta cells of islets of Langerhans in the pancreas
Show answer and solution

Answer: (D) Beta cells of islets of Langerhans in the pancreas

Insulin lowers blood glucose and is secreted by beta cells of the islets of Langerhans in the pancreas. Alpha cells secrete glucagon, which raises blood glucose. The thyroid secretes thyroxine and the adrenal cortex secretes cortisol. Lack of insulin leads to diabetes mellitus.
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Original question written in the NDA 2016 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake