Across
- 3. system The system that protects the body from infection
- 4. system Bones and joints
- 6. system Controls everything that happens in our bodies
- 8. system The system that controls breathing
- 9. Smallest level of organization for living things
Down
- 1. tissue Has characteristics that force the heart to beat
- 2. The main building block of the human body
- 3. system The organ system that protects the body from damage, comprising the skin and its appendages
- 5. Humans are an example
- 7. system These organs extract nutrients from foods