Q. An endocrine gland, which secretes melatonin, is located at

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Solution:

The Pineal Gland
- Location: Dorsal side of forebrain.
- A hormone secreted: Melatonin.
- Functions of melatonin :
Melatonin is very important for the regulation of a 24-hour (diurnal) rhythm of our body.
Example: It helps in maintaining the normal rhythms of the sleep-wake cycle, body temperature, etc.
It also affects - metabolism, pigmentation, menstrual cycle, and our immune system.