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3. Compare and contrast the parasympathetic and sympathetic nervous systems.

4. What are neurotransmitters? Identify their parts and functions.



Answer :

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Final answer:

The detailed answer explains the differences between the sympathetic and parasympathetic divisions of the autonomic nervous system and describes neurotransmitters and their functions.


Explanation:

Differences between Sympathetic and Parasympathetic Divisions of the Autonomic Nervous System:

Sympathetic: Fight or flight response, dilates pupils, inhibits digestion, accelerates heart rate.
Parasympathetic: Rest and digest response, constricts pupils, stimulates digestion, slows heart rate.

Neurotransmitters:

Neurotransmitters are chemical messengers that transmit signals across synapses between neurons. Examples include:

  1. Acetylcholine: Controls muscle movement.
  2. Dopamine: Affects emotions, pleasure, and pain perception.
  3. Serotonin: Regulates mood, appetite, and sleep.

Learn more about Autonomic Nervous System here:

https://brainly.com/question/40404867


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