Question

regulation of Melatonin​

Answer 1

Answer:

Blood levels of the pineal hormone melatonin are high at night and low during the day. Its secretion is regulated by a rhythm-generating system located in the suprachiasmatic nucleus of the hypothalamus, which is in turn regulated by light. ... Melatonin rhythms are altered in a variety of circadian rhythm disorders.

Answer 2

Regulation of melatonin is as follows:

• Rate of melatonin secretion is affected by variations of sunlight .
• During day time or when the light is bright the secretion of melatonin decreases while,during night time or when the light is dim the secretion of melatonin is increases.
• In lower vertebrates,it controls the skin color,while in mammals it controls the sexual maturation.