Body System Vocabulary

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