The hormone melatonin is produced by the Blank______ gland.Multiple choice question.pituitaryhypothalamuspinealadrenal

The hormone melatonin is produced by the pineal gland.

Explanation:

Melatonin is a hormone that regulates sleep-wake cycles and is primarily secreted in response to darkness. The pineal gland, a small pea-shaped gland located in the brain, is responsible for the production of melatonin. It plays a crucial role in maintaining circadian rhythms, which are physical, mental, and behavioral changes that follow a daily cycle. The secretion of melatonin is indirectly influenced by light exposure; it is suppressed by light and stimulated in darkness, helping to signal the body when it is time to sleep.

In summary, among the options provided, the correct answer is the pineal gland, which is essential for the production of melatonin and the regulation of sleep patterns.