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:
A and D only
B and C only
C and D only
D and E only
The correct answer is Option 3) C and D only.
Thyroid hormone primarily influences the regulation of metabolism and growth in the body. It affects various physiological processes, but not all processes are directly controlled by thyroid hormone. Let's go through each option:
C. Normal rhythm of sleep-wake cycle: The sleep-wake cycle is primarily regulated by the hormone melatonin, which is produced by the pineal gland. Thyroid hormone does not directly control the sleep-wake cycle.
D. Development of immune system: The development of the immune system is not directly controlled by thyroid hormone. It is regulated by various other factors and immune cells.
For incorrect options,
A. Maintenance of water and electrolyte balance: This process is not directly regulated by thyroid hormone. It is primarily controlled by hormones such as antidiuretic hormone (ADH) and aldosterone.
B. Regulation of basal metabolic rate: Thyroid hormone plays a crucial role in regulating the basal metabolic rate (BMR). It affects the rate at which the body utilizes energy.
E. Support the process of R.B.Cs formation: The production of red blood cells (RBCs) is primarily controlled by erythropoietin, a hormone produced by the kidneys. Thyroid hormone does not directly support the process of RBC formation.
Based on the explanations above, we can conclude that Option 3) C and D only is the correct answer.