Nervous System

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Across
  1. 1. A fatty substance that wraps around and insulates axons, enhancing the speed of electrical impulse transmission.
  2. 3. This major division of the nervous system includes the brain and spinal cord, serving as the command center of the body.
  3. 7. The segment of an axon covered by myelin between two consecutive nodes of Ranvier.
  4. 10. The division of the nervous system responsible for involuntary bodily functions, such as heart rate and digestion.
  5. 11. The cell body of a neuron, containing the nucleus and essential cellular components.
  6. 13. A type of tumor that originates from the glial cells in the central nervous system, often associated with the brain or spinal cord.
  7. 14. A detectable change in the internal or external environment that elicits a response from the nervous system.
  8. 16. The process by which the nervous system combines and interprets sensory information to form a coherent response.
  9. 17. Branch-like structures that receive signals and information from other neurons, facilitating communication.
  10. 19. A cluster of nerve cell bodies located outside the central nervous system.
  11. 20. A bundle of nerve fibers within the central nervous system, connecting different regions.
  12. 23. The release of neurotransmitters by neurons at synapses, facilitating communication with other neurons.
  13. 26. The network of nerves extending from the central nervous system, connecting the rest of the body to the brain and spinal cord.
  14. 27. The connective tissue surrounding individual nerve fibers in the peripheral nervous system.
  15. 28. The long, slender extension of a neuron that conducts electrical impulses away from the cell body.
  16. 29. A star-shaped glial cell that provides support and nourishment to neurons in the central nervous system.
Down
  1. 2. Often referred to as the "second brain," this nervous system is primarily responsible for regulating the gastrointestinal tract.
  2. 4. A benign or malignant tumor arising from nerve tissue, commonly found in peripheral nerves, causing pain or other sensory disturbances.
  3. 5. The ability of neurons to transmit electrical impulses along their axons.
  4. 6. Junctions between neurons where information is transmitted through chemical or electrical signals.
  5. 8. The process of detecting and perceiving stimuli through sensory organs.
  6. 9. The property of neurons to respond to stimuli and generate electrical impulses.
  7. 12. The cytoplasm within the axon of a neuron, involved in the transport of substances.
  8. 15. Immune cells of the nervous system, responsible for protecting and cleaning up cellular debris.
  9. 18. Within a neuron, this structure contains the genetic material and serves as the control center.
  10. 21. A type of glial cell that produces myelin in the central nervous system.
  11. 22. The outermost layer of some axons, formed by Schwann cells, aiding in nerve regeneration.
  12. 24. A bundle of nerve fibers (axons) in the peripheral nervous system, transmitting signals between the CNS and other body parts.
  13. 25. The fundamental unit of the nervous system, responsible for transmitting electrical and chemical signals.