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week 13
study stack week 13
| Term | Definition |
|---|---|
| Lymphatic system | A network of vessels that helps remove extra fluid from tissues and returns it to the bloodstream |
| Lymph nodes | Small filters in the lymphatic system that trap germs, cancer cells, and waste. |
| Immune system | The bodys defense system that fight infections viruses and harmful substances |
| white blood cells | cells that protect the body by fighting off bacteria viruses and other foreign invaders |
| antibodies | Proteins made by the immune system that recognize and help destroy germs |
| respiratory system | The body system that brings oxygen in and removes carbon dioxide |
| Lungs | two organs that take in oxygen when we breathe and release carbon dioxide when we exhale |
| heart | a strong muscle that pumps blood throughout the body |
| blood vessels | tubes- arteries, veins, capillares that carry blood to and from the heart |
| red blood cells | blood cells that carry oxygen from the lungs to the rest of the body |