Across
- 6. type of muscle found only in the heart
- 7. place where sebaceous glands are found
- 8. body's first line of defense
- 11. type of tissue that supports, connects and protects other structures in the body
- 13. another name for immovable joints
- 14. process of bones becoming harder and more rigid; happens when infants bones fuse
- 17. system that controls and regulates body functions using hormones
- 18. another name for the fingertip bone
Down
- 1. longest bone in the body
- 2. protects your brain
- 3. type of cells that destroy bone so new bone can be made
- 4. method of building immunity that involves exposing someone to a small amount of a pathogen to build an immune response
- 5. skin uses sunlight to produce this
- 9. place where lymphocytes are produced
- 10. place where melanin is produced
- 12. type of tissue that makes up the epidermis
- 15. type of disease in which a person's immune system can't distinguish the body's own cells from invaders
- 16. place where bones meet