Which of the following is responsible for sleep wake cycle movement?

Dopamione

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Melatonin

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Serotonin

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Adrenaline

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Solution

The correct option is B Melatonin
Option B is correct here.

The circadian rhythm is set by the suprachiasmatic nucleus of the hypothalamus, which regulates the sleep-wake cycle.
The suprachiasmatic nucleus projects to the pineal gland to release melatonin, which promotes sleep.
At the time of morning melatonin secretion through pineal gland get low and get stop slowly because of that person get wake up.

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