Question 4

The blood glucose level in a patient was very high. It may be due to inadequate secretion of:
(A) growth hormone from pituitary gland
(B) oestrogen from ovary
(C) insulin from pituitary gland
(D) insulin from pancreas

Answer:

(D) Insulin from pancreas

Explanation:

• Growth hormone (Pituitary) → controls growth, not blood sugar → ❌

• Oestrogen (Ovary) → controls female reproductive cycle, not blood sugar → ❌

• Insulin (Pituitary gland) → Wrong, because insulin is not secreted by pituitary, it is secreted by pancreas → ❌

• Insulin (Pancreas) → ✅ Insulin is secreted by β-cells of islets of Langerhans in the pancreas. It helps lower blood sugar by promoting uptake of glucose into cells.
  Lack of insulin → diabetes mellitus → high blood glucose level.