Question

The hormone cortisol is secreted in a circadian rhythm, with the highest levels at breakfast time and lowest around midnight. Which statement is the most likely explanation of this observation?-Cortisol is not homeostatically regulated.-Cortisol is regulated by positive feedback during the night and negative feedback during the day.-The homeostatic setpoint for cortisol varies over a 24-hour cycle.-Negative feedback regulation of cortisol is overridden by environmental stimulation during the day.

Answer 1

- The homeostatic setpoint for cortisol varies over a 24-hour cycle.

Step-by-step explanation:

Cortisol: it is a hesteroid hormone, it is released with a diurnal cycle. It is released under cirmustances of stress. It produced by the adrenal gland.