| A | B |
|---|
| tissue | A group of cells that perform one function together |
| organ | A group of tissues that perform one function together |
| epithelial tissue | Tissue that covers body surfaces and lines body cavities |
| connective tissue | Tissue that supports other body tissues and binds tissues and organs together |
| muscle tissue | Tissues specialized to contract or shorten |
| cell specialization | In multicellular organisms, cells develop to perform particular functions. |
| organ system | A group o f organs that work together to perform one function. |
| red blood cells | Special cell that carry oxygen through the body. |
| pancreatic cells | produce compounds like insulin that the body needs |
| nerve cells | transmit information from one part of the body to another |
