Across
- 4. System The brain and spinal cord are in this system
- 6. Describes the form and organization of body parts
- 8. Mature bone cells
- 9. included bones of the ribs, head, sternum, and vertebra
- 10. Another word for internal organs
- 11. Small spaces between neurons
- 12. The erosion of the lining of the digestive tract
Down
- 1. Vitamin D deficiency
- 2. This organ is divided into three sections
- 3. A stable condition of the internal environment
- 5. Produces HCL
- 7. Breaks down food mechanically and chemically
- 13. Smallest level of organization