Nervous System Ch 10 Terminology Review

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Across
  1. 2. A narrow extracellular space between the cells at a synapse.
  2. 3. Neuron that conducts impulses from the central nervous system to an effector.
  3. 4. Sequence of electrical changes in part of a nerve cell or muscle cell exposed to a stimulus that exceeds threshold.
  4. 5. Part of the nervous system that controls the viscera.
  5. 6. Sensitive part of an axon where an action potential is generated.
  6. 10. Neuroglia that line the ventricles of the brain.
  7. 19. Chemical that an axon secretes, into a synapse, that stimulates or inhibits an effector (muscle or gland) or other neuron.
  8. 23. nerve cell
  9. 24. Mass of neuron cell bodies located outside the central nervous system (pl., ganglia)
  10. 25. Process of a neuron that receives input from other neurons.
  11. 26. Type of neuroglia in the CNS that produces myelin.
  12. 27. A group of nerve cells in the central nervous system that synapse with each other.
  13. 28. Type of neuroglia that connects neurons to blood vessels in the CNS.
  14. 29. Neuroglia of the CNS that support neurons and phagocytize bacteria and cellular debris
  15. 30. A nerve fiber; conducts an impulse away from a neuron cell body.
  16. 31. The neuron releasing neurotransmitter at a synapse, on the “sending” side of a synapse.
  17. 33. type of neuroglia that surrounds an axon of a peripheral neuron, forming the neurilemma and myelin.
  18. 35. Neuron on the “receiving” side of a synapse.
  19. 37. neuron Neuron that has a single process associated with its cell body
  20. 38. Impulse conduction along an axon that seems to jump from one node to the next.
  21. 39. A single neuron having synapses with two or more postsynaptic cells.
  22. 40. Lipid material that forms a sheath like covering around some axons.
  23. 41. Nerve cell that has many processes.
  24. 42. Specialized cells of the nervous system that produce myelin, maintain the ionic environment, provide growth factors that support neurons, provide structural support, and play a role in cell-to-cell communication.
  25. 43. The brain and spinal cord; CNS.
Down
  1. 1. neuron A nerve cell with two cell processes associated with its cell body.
  2. 2. Motor pathways of the peripheral nervous system that lead to skeletal muscles.
  3. 7. Living cellular layer formed from Schwann cells on the exterior of some axons.
  4. 8. Specialized structure associated with the peripheral end of a sensory neuron specific to detecting a particular sensation and triggering an impulse in response.
  5. 9. Neuron between a sensory neuron and a motor neuron; internuncial or association neuron.
  6. 11. Schwann cells
  7. 12. Bioelectric signal conducted along a neuron axon or muscle fiber.
  8. 13. Two or more neurons forming synapses with the same neuron.
  9. 14. Stored electrical energy across a cell membrane due to the unequal distribution of ions on the two sides of the membrane.
  10. 15. Level of potential at which an action potential is triggered in a neuron.
  11. 16. Membranous sacs in the cytoplasm of nerve cells that have ribosomes attached to their surfaces; Nissl bodies.
  12. 17. Parts of the nervous system outside the brain and spinal cord; PNS.
  13. 18. A change in the membrane potential of the postsynaptic cell.
  14. 20. Neurotransmitter from a presynaptic neuron affecting the postsynaptic cell.
  15. 21. Period following stimulation during which a neuron or muscle fiber will not respond to another stimulus.
  16. 22. Stored electrical energy due to the difference in electrical charge between the inside and outside of an undisturbed nerve cell membrane.
  17. 32. Functional connection between the axon of one neuron and the dendrite or cell body of another neuron or the membrane of another cell type.
  18. 34. Glia in the peripheral nervous system that support neurons in ganglia.
  19. 36. neurons Neuron that conducts an impulse from a receptor to the central nervous system.