Chapter 8: Animals' need to survive

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Across
  1. 2. A thing or event that evokes a specific functional reaction in an organ or tissue; the constant changes taking place around us.
  2. 4. A type of muscle that is involuntary and that allows food to move along the digestive system.
  3. 6. A group of similar cells performing a common function.
  4. 8. Type of cell that fights off viral and bacterial infections wherein when viruses and bacteria are present, these multiply rapidly to engulf and destroy them.
  5. 9. A type of muscle that is voluntary and mostly attached to the bones.
  6. 14. A body system that works by regulating most activities by sending nerve impulses throughout the body.
  7. 16. The food intake and the processes of food conversion.
  8. 18. The process wherein the nutrients absorbed are transported to provide fuel and essential raw materials that the body needs.
  9. 19. The passing of materials that were not absorbed in the large intestine out of the body.
  10. 20. The intake of food into the body.
  11. 21. How the body gets oxygen and gets rid of carbon dioxide.
  12. 22. Animal's feeding habit wherein animals eat flesh.
  13. 23. The largest organ of our body and the outer covering that protects our body.
  14. 24. A type of tissue that is responsible for the transport of absorbed food in the body.
Down
  1. 1. The study of animal and plant tissues.
  2. 3. The process of removing undigested matter from the body.
  3. 5. The process of maintenance of the internal environment in the body.
  4. 7. A firm framework that gives physical support and protection for the body and provides surfaces for the attachment of muscles.
  5. 10. A body system that produces hormones that control many of the bodily activities.
  6. 11. A type of muscle that is involuntary and pumps the heart.
  7. 12. Animals reproduce sexually through the merging of the gametes (sperm and egg cells).
  8. 13. A specialized cell that carries information through the nervous system in the form of nerve impulses.
  9. 15. An instrument used to cut tissues in ultra-thin sections
  10. 17. The mechanical and chemical breakdown of food molecules into soluble and diffusible molecules that can be absorbed into body cells.
  11. 18. The process whereby the digested food materials are taken by the cells and are converted into new protoplasm to provide energy.