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SCI 7 Unit 2
Cells
Term | Definition |
---|---|
unicellular | organism made of a single cell that controls all functions |
multicellular | organism made of many cells that perform different functions |
cells | basic unit of all living matter |
tissue | similar cells that work together |
epithelial tissue | consists of tightly packed sheets of cells that cover surfaces and line body cavities |
connective tissue | found throughout your body, supports organs and blood vessels and links epithelial tissues to muscles |
muscle tissue | unique cells that contract and relax |
nervous tissue | involved in sensing stimuli—external or internal changes—and processing and transmitting information throughout the body. |
organ | two or more tissues that work together |
organ system | groups of organs that work together |
organism | groups of organ systems that work together |