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Across 3. channels where lymph nodes passes through 5. Area where urine becomes concentrated 10. The deep layer of the skin 11. Its made up of skull, vertebral column and rib cage 12. Specialized cell of the skin 14. Helps the body to get ready to sleep 15. Located at the top of the kidneys 16. Muscles that stimulates one contraction 17. Carries blood away from the heart 20. Female gametes 21. Ensures blood will flow in one way 23. sites where the leukocytes and erythrocytes produce 24. Synonym of sudoferous gland 26. They are not mineralized by calcium salt 30. Ovaries and testes 31. Secretes surficants 32. Outer layer of the kidney 33. Produces T-lymphocytes

Down 1. largest part of the brain 2. Movement of the food along the digestive tract 4. Muscles that are attached to the bones 6. Sperm and egg cell 7. Inner layer of the kidney 8. responsible for moving the arm around the shoulder joint, which is one of the most mobile joints in the entire body 9. nerve cells 13. Process of eating 18. Also known as windpipe 19. Keeps alveoli open 21. antibody producing cells 22. term use to describe the sides of the brain 25. channels where lymph nodes passes through 27. Carries blood back to the heart 28. The weight bearing organ 29. Inner folds