At Night, the Suprachiasmatic Nuclei (SCN) Located in the Hypothalamus

question 455

Multiple Choice

At night, the suprachiasmatic nuclei (SCN) located in the hypothalamus

• A)are inactive allowing melatonin levels to increase thereby promoting relaxation and sleepiness
• B)are inactive allowing melatonin levels to decrease thereby promoting relaxation and sleepiness
• C)are more active allowing melatonin levels to increase thereby promoting relaxation and sleepiness
• D)are more active allowing melatonin levels to decrease thereby promoting relaxation and sleepiness
• E)are stimulated directly from the cortex

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