Body Systems

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Across
  1. 1. Breaks down food to absorb nutrients and remove waste.
  2. 3. – Stores urine before it leaves the body.
  3. 5. Controls body functions by transmitting signals between body and brain.
  4. 10. – Defends the body against infection.
  5. 12. – Organ that churns food and mixes it with digestive juices.
  6. 13. – Organ where T-cells mature and develop.
  7. 15. – Main communication line between brain and body.
  8. 16. – Blood vessel that carries blood away from the heart.
  9. 18. – The kneecap bone.
  10. 19. Allows movement and maintains posture using muscles.
  11. 20. – Gland that regulates metabolism.
  12. 24. Provides structure, protects organs, and allows movement.
  13. 26. Supplies oxygen to the body and removes carbon dioxide.
  14. 27. – “Master gland” that controls other glands.
  15. 28. – Largest artery in the body.
  16. 29. – Tubes that branch from trachea into lungs.
  17. 30. Protects the body from pathogens and harmful substances.
  18. 32. – Organ that performs gas exchange.
  19. 33. Transports oxygen, nutrients, and waste throughout the body.
  20. 34. – Muscle on the front of the upper arm.
  21. 35. – Filters blood and creates urine.
  22. 36. – Pumps blood through the body.
  23. 37. – Organs that produce sperm in males.
  24. 38. – Chemical that controls body functions.
  25. 40. – Outer layer of skin.
Down
  1. 2. – Flat bone in the middle of the chest that connects to ribs.
  2. 4. Removes waste products from the body.
  3. 6. – One of the two bones in the forearm.
  4. 7. – The windpipe; connects throat to bronchi.
  5. 8. – Chest muscle that moves the shoulder joint.
  6. 9. – Small opening in the skin that releases sweat.
  7. 11. – Filters toxins from the blood.
  8. 12. – Where most digestion and nutrient absorption occurs.
  9. 14. – A specialized cell that carries electrical signals.
  10. 17. – Group of four muscles on the front of the thigh.
  11. 21. Protects the body; includes skin, hair, and nails.
  12. 22. – Organ that processes sensory information and controls thinking.
  13. 23. – Muscular tube that moves food from mouth to stomach.
  14. 25. – Male reproductive cell.
  15. 26. Enables the production of offspring.
  16. 31. Produces hormones that regulate growth, metabolism, and mood.
  17. 39. – Female reproductive cell.