human
What are the most important things to know about the human body?
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1. The human body is made up of many different systems that work together to keep us alive and functioning properly.
2. Each system has its own unique purpose, but all serve a common goal – to keep us healthy.
3. The circulatory system carries oxygenated blood throughout the body, delivering it to every cell.
4. The respiratory system helps to bring in oxygen from the atmosphere and expel carbon dioxide waste.
5. The digestive system breaks down food into smaller components for further digestion.
6. The nervous system controls our muscles, senses, and thoughts.
7. The endocrine system produces hormones that regulate other bodily functions.
8. The immune system protects the body against foreign invaders such as bacteria and viruses.