Across
- 3. acts a filter for purifying red blood cells
- 4. , one of the 5 lymph node locations
- 7. one of the compounds blood carries through the body
- 8. the second level of organization
- 9. they have sharp teeth needed to rip flesh and meat
- 12. endocrine gland
- 14. Endocrine gland
- 17. this system uses hormones to send messages through body
- 19. respiratory system brings this gas into the body
- 20. chemical messages sent from neurons
Down
- 1. the space between the lungs where the heart is located
- 2. the type of bone that is light and spongy
- 5. one of the 5 lymph node locations
- 6. one of the 5 bone shapes
- 10. the largest organ system
- 11. have a dental pad
- 13. the layer of the skin where subQ injections are given
- 15. this muscle type is found in visceral organs
- 16. this muscle is found in the heart
- 18. the lymphatic system consists of ____ and ducts