Which of the following are not under the control of thyroid hormone?
A. Maintenance of water and electrolyte balance.
B. Regulation of basal metabolic rate.
C. Normal rhythm of sleep-wake cycle.
D. Development of immune system.
Thyroid hormones play an important role in the regulation of the basal metabolic rate and also influence the maintenance of water and electrolyte balance , . The normal rhythm of the sleep-wake cycle is regulated by melatonin secreted by the pineal gland . The development of the immune system is a major role of the thymus gland and its hormones, thymosins , . Therefore, statements C and D describe functions not under the control of the thyroid hormone.
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