Nerve system 5.5

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Nerve system 5.5

  1. 1. – Sensory – Integrate – Motor
  2. 2. : • – Brain – Spinal Cord – Granglia – Nerve
  3. 3. • Co-ordinating fiber • paramecium Cilia
  4. 4. • Spong :
  5. 5. • Flat worm and Round worm – nerveganglion) brain) – nerve cord)
  6. 6. • Annelid, Arthropod, Mollusk
  7. 7. – – –
  8. 8. • • •
  9. 9. : Nerve Cell Neuron
  10. 10. : Nerve Cell Neuron • – cell body • ER, Golgi body – nerve fiber • • cell body dendrite
  11. 11. : Nerve Cell Neuron
  12. 12. : Nerve Cell Neuron
  13. 13. : Nerve Cell Neuron
  14. 14. : Nerve Cell Neuron • myelin sheath • Schawaan cell)
  15. 15. : Nerve Cell Neuron
  16. 16. : Nerve Cell Neuron
  17. 17. : sensory neuron• : motor neuron• : association neuron •
  18. 18. • • • Axon •
  19. 19. • •
  20. 20. • Dendrite Axon •
  21. 21. • Axon • Dendrite • pseudounipolar neuron
  22. 22. : •Astrocyte – CSF –
  23. 23. :
  24. 24. :
  25. 25. :
  26. 26. : - A.L. hodgkin) A.F. huxley) - microelectrode) - cathode rayoscilloscope) -
  27. 27. : - resting membrane potential)
  28. 28. :
  29. 29. : - - -
  30. 30. : - Na+ Cl- K+ - K+ Na+ Cl-
  31. 31. : - ATP Na+ K+ Na+:2 K+
  32. 32. :
  33. 33. :
  34. 34.
  35. 35. :
  36. 36. :
  37. 37. : -Threshold Potential -Depolarization
  38. 38. : -Repolarization K+ +50 mV -
  39. 39. : -Action Potential Nerve Impulse
  40. 40. : - -sodium potassium pump - Active
  41. 41. :
  42. 42. : -Nerve cell Myelin Sheath Axon -Nerve cell Myelin Sheath Action Potential Node of Ranvier
  43. 43. :
  44. 44. :
  45. 45. : 1. Myelin Sheath 2. Myelin Sheath Myelin Sheath
  46. 46. :
  47. 47. : -Otto Loewi - Neurotransmitter
  48. 48. : Neurotransmitter 1. Acetylcholine : 2. Norepineprine (NE)
  49. 49. : Presynaptic neuron - - -
  50. 50. :
  51. 51. :
  52. 52. : Postsynaptic neuron - Postsynaptic neuron Depolarization Hyperpolarization
  53. 53. :
  54. 54. • • Meninges – : Dura Mater – :Arachnoid Mater – :Pia Mater
  55. 55. • Cerebrospinal fluid (CSF) – – venticle –
  56. 56. : • • • •
  57. 57. :
  58. 58. : • • spinal nerve
  59. 59. :
  60. 60. : • H / – dorsal horn) – 2 ventral horn)
  61. 61. :• dorsal root) • Ventral root)
  62. 62. :• • • • •
  63. 63. : •
  64. 64. : •
  65. 65. : • •

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