Across
- 2. your body's outer layer.
- 4. To transport and sustain these cells.
- 5. This system sends messages back and forth between the brain and the body.
- 6. help control mood, growth and development, the way our organs work, metabolism , and reproduction
- 7. composed of specialized cells called muscle fibers.
Down
- 1. where your body breaks down food and absorbs nutrients
- 3. your body's central framework.
- 4. includes the nose, mouth, throat, voice box, windpipe, and lungs