Body System

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Across
  1. 4. A specialized nerve cell that carries electrical messages, or impulses, throughout the body.
  2. 6. The bony framework of the head that protects the brain.
  3. 7. The main organ of the nervous system that controls all body functions.
  4. 8. Part of a neuron that gathers information and carries it toward the cell body.
  5. 9. muscle: Voluntary muscles attached to bones that allow for conscious movement, such as walking or running.
  6. 11. system
  7. 12. muscle: The specialized involuntary muscle found only in the heart that pumps blood.
  8. 15. cord: The bundle of nerves that extends from the brain down the back and is protected by the vertebrae.
  9. 17. muscle: A muscle that you can control and move by choice, like the muscles in your arms and legs.
  10. 18. The internal framework of bones and cartilage that supports the body.
  11. 20. A tissue composed of fibers that contract and relax to create movement.
  12. 21. Nervous System (CNS, Composed of the brain and spinal cord, it processes and transfers information.
  13. 22. The soft, fatty tissue inside certain bones where new blood cells are produced.
  14. 23. The tiny gap between two neurons where a message is passed.
  15. 25. A muscle that decreases the angle between two bones, like your bicep when you bend your arm.
  16. 26. An electrical signal that travels along a neuron to transmit information.
  17. 27. Part of a neuron that sends information away from the cell body to other neurons.
  18. 28. A tough cord of tissue that attaches muscle to bone.
Down
  1. 1. The bones of the chest that protect the heart and lungs.
  2. 2. An automatic and quick reaction to a stimulus that is not controlled by choice.
  3. 3. The small bones that make up the spinal column and protect the spinal cord.
  4. 5. A bundle of neurons that transmits impulses.
  5. 10. To shorten or tighten a muscle, causing movement.
  6. 13. A muscle that pulls in the opposite direction of another muscle to create balance.
  7. 14. Nervous System (PNS, Includes the nerves that branch out from the CNS to all parts of the body.
  8. 16. muscle: A muscle that moves automatically without you thinking about it, such as your heart.
  9. 19. muscle: Involuntary muscles that control movement in the internal organs, like the stomach and blood vessels.
  10. 22. system
  11. 24. A muscle that increases the angle between two bones, like your tricep when you straighten your arm.