The document discusses the nervous system and its two main subdivisions - the sympathetic and parasympathetic nervous systems. The sympathetic nervous system is activated during times of stress and prepares the body for action by increasing heart rate, breathing, and other responses. The parasympathetic nervous system works to restore the body to a relaxed state and maintains normal functions. It also discusses the basic structure and function of neurons as the basic building blocks of the nervous system.

1. Prepared by:
Aple M. Rigor

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14. • organs and limbs.
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15. movements and has two
subdivisions:
• 1. Sympathetic Nervous System is activated when the
body is in a dynamic role or stress. (e.g., increased
heart rate and breathing, dilation of pupil, sweating)
• 2. Parasympathetic Nervous System maintains body
functions and restores the body to normal or relaxed
mode.
• organs and limbs.

16. also called as neuron.

17. Axon
Dendrites Cell body

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26. Part I Part 2