1. 35.1 Human Body Systems

2. Specialized Cell Cell that is uniquely suited to performing a particular function.

3. Epithelial Tissue Tissue that covers the surface of the body and lines internal organs.

4. Connective Tissue Tissue that holds organs in place and binds different parts of the body together.

5. Nervous Tissue Tissue that receives messages from the body’s external and internal environment, analyzes the data, and directs the response.

6. Muscle Tissue Tissue that controls the internal movement of materials in the body, as well as external movement.

7. Homeostasis Process by which organisms maintain a relatively stable internal environment.

8. Feedback Inhibition Process in which the product or result stops or limits the process.

9. Key Concept The levels of organization in a multicellular organism include cells, tissues, organs, and organ systems.

10. Key Concept Homeostasis is the process by which organisms keep internal conditions relatively constant despite changes in external environments. Homeostasis in the body is maintained by feedback loops.