Question

Which is not a function of thyroid hormone?

• A. Regulation of basal metabolic rate
• B. Controls metabolism of carbohydrates, proteins and fats
• C. Maintains water and electrolyte balance
• D. Regulates the diurnal rhythm

Answer 1

The correct option is D Regulates the diurnal rhythm

Thyroid hormones are secreted from thyroid gland and regulate many functions of body like:

• regulation of BMR (Basal metabolic rate) by thyroxine which increases consumption of glucose by metabolically active tissues.
• regulation of proteins, carbohydrates and fats metabolism.
• regulation of water and electrolyte balance by calcitonin which inhibits reabsorption of calcium by renal tubules.

Diurnal rhythm of body is regulated by melatonin hormone secreted from pineal gland.

So, the correct answer is 'Regulates the diurnal rhythm'.