Question

From which of the following is insulin secreted?

• A. Thyroid
• B. Pancreas
• C. Adrenal body
• D. None of these

Hint:

Diabetes mellitus occurs due to lack of insulin secretion or improper utilization of insulin.

Answer 1

The Correct Option is B

Step 1: Concept.
Insulin is a hormone secreted by the beta cells of the Islets of Langerhans in the pancreas. It regulates glucose metabolism.
Step 2: Analysis of options.
(A) Thyroid: Secretes thyroxine, not insulin.
(B) Pancreas: Correct, insulin is secreted here.
(C) Adrenal body: Secretes adrenaline, not insulin.
(D) None of these: Incorrect.
Step 3: Conclusion.
Thus, insulin is secreted by the pancreas, so the correct answer is (B).