Introductory Psychology CLEP Prep Practice Exam 2026 – The Comprehensive All-in-One Guide to Success!

Question: 1 / 400

What is the primary role of neurotransmitters in the body?

Modulate heart rate and breathing

Stimulate physical activity

Relay information between nerve cells

Neurotransmitters are chemical messengers that play a crucial role in transmitting signals between nerve cells in the body. They are responsible for relaying information and facilitating communication between different areas of the nervous system, including the brain, spinal cord, and peripheral nerves. While some neurotransmitters may have effects on heart rate and breathing, their primary role is not to modulate these bodily functions. Additionally, while neurotransmitters may have some influence on physical activity, their main function is not to stimulate it. They also do not orchestrate the body's endocrine system, which is primarily regulated by hormones. Therefore, the correct answer is C relay information between nerve cells.

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Orchestrate the body's endocrine system

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