Examlex
The pons and cerebellum make up which of the following divisions?
Melatonin
A chemical substance secreted by the pineal gland in reaction to lack of light, which controls the rhythm of sleeping and waking.
Serotonin
A neurotransmitter in the brain that plays key roles in stabilizing mood, feelings of well-being, and happiness.
Norepinephrine
A neurotransmitter and hormone involved in the body's stress response and in various cognitive and emotional functions.
Suprachiasmatic Nucleus
A small region of the brain in the hypothalamus responsible for controlling circadian rhythms, which regulate the body's sleep-wake cycle.
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