Across
- 2. largest artery in the body
- 4. connective tissue that links bone to bone
- 6. connective tissue that links muscle to bone
- 8. group of similar cells performing a function
- 14. mature bone cell
- 15. functional unit of the kidney
- 16. outermost layer of the skin
- 17. branched extension that receives nerve signals
- 18. basic unit of life
- 19. brain region regulating hormones and temperature
Down
- 1. maintenance of stable internal conditions
- 3. air sacs in lungs where gas exchange occurs
- 5. long nerve fiber that conducts impulses away
- 7. nerve cell that transmits impulses
- 9. junction between two neurons
- 10. contractile fiber in muscle cells
- 11. fluid that circulates through lymphatic vessels
- 12. functional unit of muscle contraction
- 13. lower chamber of the heart that pumps blood
- 20. structure composed of tissues working together