Which of the following secretes the hormone insulin, which regulates the blood sugar level in the human body?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Pancreas
Insulin is secreted by the pancreas and lowers the blood sugar level. Too little insulin raises the sugar level in the blood, causing diabetes.
Why the other options are incorrect
Option (1) Pituitary gland — Incorrect. It secretes growth hormone and hormones that control other glands.
Option (2) Thyroid — Incorrect. It secretes thyroxin, which regulates metabolism.
Option (4) Pineal gland — Incorrect. It secretes melatonin, linked to the sleep cycle.