Body Systems

4. A group or layer of cells that work together to perform a specific function.
6. A single living thing formed by all organ systems working together to maintain homeostasis.
8. A system where the organ works to remove waste and toxins from the body.
9. A system where the organs work together as the organism control center.
12. A system where the organs work together to use blood to deliver oxygen and nutrients
13. Basic unit of life in all living things.
14. To help the body fight infections, disease, and other invaders.

1. A state of balance among all the body systems needed for the body to survive and function correctly.
2. To bring in oxygen and expel carbon dioxide.
3. A group of organs that works together.
5. To take food and liquids and break down into substances that the body can use for energy.
7. Aides in the movement and protects the internal organs.
10. A system to allow movement in the body.
11. Two or more tissues that work together as a unit to perform a specific function.