Body Systems

4. Tubes that carry urine from the kidneys to the bladder.
6. Type of blood cell involved with the immune system.
7. Body system that filters wastes from blood and is involved in water balance.
10. Outer part of the kidney.
12. Large square teeth, found at the back, for grinding, crushing and chewing food.
14. Type of digestion that uses acids and enzymes to break-down food.
18. The top sections of the heart.
19. The important gas that is needed by cells to make energy.
21. Pointy teeth, next to the front teeth.
22. Organs that filter the blood.
24. Tube that carries oxygen from our mouth to our lungs.
27. Small, finger-like projections inside your small intestine to increase the surface area.
28. Small blood vessels that carry blood to almost every cell in your body.
29. Carry oxygenated blood away from the heart.
30. Organ that contains acid to chemically break-down food.
32. The bottom sections of the heart.
35. Body system that takes in oxygen and releases carbon dioxide.
36. Thin tubes inside the kidneys that carry the filtered fluid.
38. Where most of our nutrients are absorbed.

1. Physically tears and breaks food into small chunks, in the mouth.
2. Which part of the intestine- large or small- re-absorbs water?
3. Muscular contractions that squeeze food down into your stomach.
5. Pumps blood around the body.
8. Stop blood from flowing backwards.
9. Found in the food that we eat. Needed to make energy.
10. The waste gas that is breathed out.
11. The liquid part of blood that is 90% water.
13. Deoxygenated blood must travel here before going to the rest of the body.
15. This organ is also called the voice box.
16. Body system that takes in food and extracts the nutrients from it.
17. Tube that carries urine from the bladder to outside the body.
20. Front teeth- sharp and flat.
23. Carry deoxygenated blood back to the heart.
25. Main artery that carries blood away from the heart.
26. Flap of skin that covers the windpipe to stop you breathing in food as you swallow.
28. Body system that carries blood around the body.
31. Type of digestion that involves the physical break-down of food.
33. Formed during the break-down of protein and excreted in the urine.
34. Special chemicals found in saliva that help to break-down food.
37. Type of blood cell that carries oxygen.