Across
- 3. sac that stores urine
- 4. muscle that aids with digestion
- 7. air sacs of the lungs
- 9. controls functions that are voluntary such as speech & movement
- 13. moves food to stomach
- 15. hair, nails, & skin belong to this system
- 16. system that fights diseases
- 18. hollow muscular organ
- 19. germs, like bacteria, viruses, parasites, & fungi
- 22. carries air from larynx to lungs
- 23. system that removes waste from the body
- 26. middle layer of skin
- 27. muscle that includes the skeletal muscle
- 28. have 270 bones
- 29. membrane that covers & protects the bones
- 30. one of the 6 organs in the lymphatic system
- 31. determines the gender
- 35. metabolism
- 36. protects your skin from sun exposure
Down
- 1. an involuntary muscle in the muscular system
- 2. system that has peripheral & central systems
- 5. produces eggs, estrogen
- 6. fertilized egg
- 8. system that transports fluids back to blood
- 10. large blood vessels
- 11. system that exchanges oxygen & carbon dioxide
- 12. system that breaks down food
- 14. lymphatic system is similar to a _____ system in a house
- 17. there are _____ main organs in the digestive system
- 20. one of the main parts in the Immune system
- 21. bundle of nerve fibers wrapped in 3 layers of tissues
- 24. filters blood from arteries
- 25. watery part of blood that carries nutrients
- 32. how many female organs are there in the reproductive system
- 33. soft, jelly-like center of bones
- 34. master gland controls hormones