Body Systems:Key Terms

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Across
  1. 4. neurons Cells in the brain and spinal cord that allow basic functions by sending commands from the brain to carry out these functions
  2. 7. Our body system consisting of the brain and spinal cord
  3. 11. An organ or cell that acts in response to a stimulus
  4. 12. Tissue that creates and releases hormones that travel in the bloodstream all over the body
  5. 14. Where the necelus of the cell is located
  6. 15. A substance which the enzyme has the ability to react with
  7. 18. A small structure deep within the centre of the brain
Down
  1. 1. The chemical reactions in the body's cell that change food into energy
  2. 2. The cellular machinery responsible for producing proteins
  3. 3. Chemicals that coordinate different functions by carrying messages through your blood to organs and tissue
  4. 5. Made up of all the different hormones in the body, regulates all biological processes
  5. 6. Self regulation process to adapt to different environments while remaining balanced
  6. 8. Organelles, or cell parts that are often referred to as the "powerhouses" of cell (provides energy)
  7. 9. The receiving or input portion of a neuron, receives signals from other neurons
  8. 10. A cell or group of cells that binds to specific molecules,receives stimuli and causes a response in the immune system
  9. 13. The movement of molecules from an area of high concentration of molecules to an area of low concentration of molecules
  10. 16. Portion of a nerve cell that carries nerve impulses away from the cell body or brain
  11. 17. Proteins to help speed up metabolism, or chemical reactions in our bodies