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hypothalamus regulates sleep-wake cycle by being attached to the pineal gland that secretes melation

hypothalamus regulates sleep-wake cycle by being attached to the pineal gland that secretes melation
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Yes,it is very correct that the hypothalamus regulates sleep-wake cycle by being attached to the pineal gland that secrete melatonin.

Pineal gland secrete melatonin.Pineal gland is a small gland which is present superior to the middle of brain.In the day time the pineal gland will be inactive and in the night,when the darkness comes the pineal gland start to produce mealtonin and this melatonin is directly discharged to the blood.This melatonin makes us sleepy and helps us to sleep well.

We know that sleep is a major physiological activity occuring in human beings.Not only the homeostatic regulation is controlling the sleep wake cycle,but also by the circadian clock.Various neuropeptide producing neurons present in the hypothalamus are involved in management of sleep-wake cycle.

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