Across
- 2. the largest blood vessels that carry oxygenated blood cells away from the heart
- 3. created by testes from puberty until death
- 5. cells that produce antibodies
- 8. membrane that covers and protects bones
- 9. cells that get rid of good cells that have been infected
- 11. 90% of nutrients are absorbed in this organ
- 12. a collection of glands that secret hormones into the circulatory system
- 14. protection of soft organs, provides support and movement for the body
- 18. soft center of the bones
- 19. created by a female's ovaries before birth
- 20. this organ helps remove germs
- 23. protect the soft tissue of fingers and toes
- 24. tiny sacs of air at the end of each bronchiole
- 25. fights disease and germs like bacteria
- 29. and organ also known as the windpipe
- 31. the "master gland" located at the base of the brain
- 32. skin, protects body from injury
- 34. muscle contractions of the body that you can control
Down
- 1. invaders that cause disease
- 4. an organ that filters blood from arteries
- 6. part of the immune system that has many functions. It is like a gutter system
- 7. removes waste from the body
- 10. breaks down food to provide energy
- 13. the system for reproduction
- 15. an organ that has sections that grow and shrink with each breath
- 16. small tubes connected to the kidneys and the bladder
- 17. works with your bones to help your body move
- 21. second layer of skin, made by connective tissue
- 22. transports nutrients, wastes, and disease fighting cells thought the body
- 26. muscles connected to the bones by tendons
- 27. regulates fight or flight response, makes adrenaline
- 28. breathing
- 30. done in the mouth, mechanical digestion
- 33. the smallest and numerous blood vessels