Cells & Body Systems

4. tiny blood vessel that connect arteries to veins
6. foot like projections on an amoeba used for movement and capturing food
8. parts of an organism that perform a specific tasks
9. substance created by the body to carry out chemical digestion
11. protects body's internal environment from the external environment
18. Specialized cells of the nervous system that receive and transmit information
21. moves bones and moves organs that contain muscle tissue
23. made of more than one cell
24. finger like projections on the cells that line the villi

1. hair like extensions that protrude from the surface of some unicellular organisms and from some in multicellular organisms
2. small finger like projections on the inner surface of the small intestine that absorbs nutrients
3. group of similar cells working together to preform a specific function
4. Transport system reaching every cell in the body
5. supplies blood with oxygen from the outside air and removes carbon dioxide from your blood
7. the movement of particles from an area of higher concentration to an area of lower concentration
10. Breaks down the food you eat into small parts to be absorbed and transported through your body
12. removes chemical and gaseous wastes from the body
13. coordinates and controls all organs and organ systems
14. provides a mobile support frame for the body and protects soft tissue organs
15. any change in an organism's environment
16. made of just one cell
17. structures in cells that preform a certain function
19. purpose or task
20. the diffusion of water through a selectively permeable membrane
22. is a living thing