what happens to setpoints in biological rhythmsSolutionPinea

what happens to setpoints in biological rhythms?

Solution

Pineal gland is a very small gland situated in the brain. Melatonin secreted from this gland helps in the establishment of circadian rhythms (day/light cycles) in the body. Circadian rhythms are the physiological processes that follow 24-hour cycle; this is regulated by the biological clock or circadian clock. The function of biological rhythms or circadian rhythms is to regulate the occurrence of physiological events over a 24-hour cycle in a systemic way.

Setpoints serve the function of homeostatic regulation, for example, the temperature regulation. Both the circadian rhythms and setpoints act independently on the effector organs. As the circadian rhythms generate the rhythmic cycling of the body temperature, the rhythmicity is restricted according to the setpoint by the regulatory systems (in this case, hypothalamus, which regulates the body temperature).