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- The body has many regulatory systems that restore balance.
- These systems return the internal environment to homeostasis.
- The nervous system and endocrine system are the main regulators.
- The nervous system uses nerve impulses to control organs.
- Nerve impulses produce rapid responses.
- The endocrine system releases hormones into the blood.
- Hormones act more slowly than nerve impulses.
- Both systems work toward maintaining balance.
- Regulation usually occurs through negative feedback systems.
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