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human body organs
| Term | Definition |
|---|---|
| organ | two or more tissues that work together to perform a similar function |
| organism | any living thing. all systems working together |
| lymphatic system | helps fight diseases; extension of immune and circulatory systems |
| immune system | protects against diseases |
| excretory system | removes wastes, including excess water |
| organ system | two or more organs working together to preform similar function |
| respiratory system | exchange oxygen and carbon dioxide between the body and the external environment |
| circulatory system | transport oxygen,nutrients and other needed materials to cells |
| tissue | a group of similar cells that perform the same function |
| skeletal system | moves and supports the body;protects internal organs |
| nervous system | detects and responds to changes in the environment |
| integument system | separates the body and external environment |
| epithelial tissue | a body tissue that covers the surface of the body |
| endocrine system | secretes hormones to regulate body functions. |