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Discuss the disadvantages and advantages of placebos.
Parasympathetic Nervous System
A division of the autonomic nervous system responsible for conserving energy and promoting a state of calmness and rest.
Acetylcholine
A neurotransmitter in both the central and peripheral nervous systems that plays an important role in muscle activation, memory, and learning.
Norepinephrine
A neurotransmitter and hormone involved in the body's fight or flight response, affecting heart rate, blood pressure, and blood glucose levels.
Epinephrine
Epinephrine, also known as adrenaline, is a hormone and neurotransmitter that increases heart rate, contracts blood vessels, and opens airways in response to stress or excitement.
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