Question: 180 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
E. Support the process of R.B.Cs formation
Choose the correct answer from the options given below:
(1) C and D only
(2) D and E only
(3) A and D only
(4) B and C only
Answer: Option (1)
Explanation:
Thyroid hormones regulate the basal metabolic rate and are essential for normal growth and metabolism.
They help in maintaining water and electrolyte balance by influencing kidney function.
Thyroid hormones also support erythropoiesis by increasing oxygen consumption and stimulating red blood cell formation.
The normal sleep–wake cycle is primarily regulated by the pineal hormone melatonin, not by thyroid hormones.
Development of the immune system is mainly regulated by thymus-derived hormones such as thymosin.
Therefore, statements C and D are not under the control of thyroid hormone.