- The human nervous system helps maintain homeostasis in the body
- It consists of receptors, coordination centers, and effectors
- The nervous system uses receptor cells to detect stimuli and process information through electrical impulses
- Various eye defects such as myopia, hyperopia, and astigmatism can be treated with spectacle lenses, contact lenses, or surgery
- The nervous system plays a role in regulating body temperature and fertility through hormonal coordination
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