Nervous tissue i

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Nervous tissue i

  1. 1. Glial Ce ll Neural tissue consists of: n e u ro n s and glial ce lls N e u ro n s
  2. 2. MAIN TYPES OF NEURONES,ACCORDONG TO THE MORPHOLOGY:UNIPOLARBIPOLARPSEUDOUNIPOLARMULTIPOLAR
  3. 3. PSEUDOUNIPOLAR NEURONES76. Spinal ganglion, HE. (low power magnification) Pseudounipolar neurones (perikaryon) Peripheral nerve fibers
  4. 4. PSEUDOUNIPOLAR NEURONES 76. Spinal ganglion, HE. (high power magnification)Pseudounipolar neurones-perikaryon(nucleus, nucleolus) Satellite cell nucleusPeripheral nerve fibers A-cell D-cell Axon Schwann cell nucleus
  5. 5. MULTIPOLAR NEURONES I. 79. Autonomic ganglion, Silver-impregnationPerikaryon Nerve fibers
  6. 6. Central canal Ventral horn(Deiters motoneurones) Segmet
  7. 7. MULTIPOLAR NEURONES IIa. Deiters motoneurones 80. Spinal cord, HE (low power magnification) Central canal Gray matterWhite matter Ventral horn (Deiters motoneurones)
  8. 8. MULTIPOLAR NEURONES IIb. Deiters motoneurones 80. Spinal cord, HE (medium power magnification)Multipolarneurones Ventral horn White matter
  9. 9. MULTIPOLAR NEURONES IIc. Deiters motoneurones 80. Spinal cord, HE (high power magnification) Multipolar neurone Glial cell nucleusCapillary
  10. 10. MULTIPOLAR NEURONES IId. Deiters motoneurones 80. Spinal cord, HE (high power magnification) Nucleus Multipolar neurone Nucleolus Glial cell nucleusCapillary
  11. 11. MULTIPOLAR NEURONES IIe. Deiters motoneurones 80. Spinal cord, HE (high power magnification) Glial cell nucleusMultipolar neurone Nissl-substance Nucleolus Nucleus
  12. 12. NEUROGLIAGLIA CELLS GLIA CELLSIN THE PNS IN THE CNS- Schwann cell - Oligodendrocytes- Satellite cell - Microglia - Astrocyte - Ependyma
  13. 13. Myelin formation in nerve fibers:Schwann-cell Oligodendrocyte (PNS) (CNS)
  14. 14. PERIPHERAL NERVE IN TRANSVERSE SECTION
  15. 15. PERIPHERAL NERVE IN TRANSVERSE SECTION Paraneurium Epineurium PerineuriumAdipose tissue EndoneuriumArtery, Vein
  16. 16. PERIPHERAL NERVE IN TRANSVERSE SECTION 72. Peripheral nerve, HE. (low power magnification) PerineuriumSchwann-cell nucleus Axon Myelin sheath Nucleus of fibrocyte
  17. 17. PERIPHERAL NERVE IN LONGITUDINAL SECTION
  18. 18. SCHMIDT- LANTERMANN CLEFTS
  19. 19. PERIPHERAL NERVE IN LONGITUDINAL SECTION 73. Peripheral nerve, HE.Nucleus of fibrocyte Node of Ranvier Schwann cell nucleus Axon
  20. 20. PERIPHERAL NERVE IN LONGITUDINAL SECTION 73. Peripheral nerve, HE. Schwann cell nucleus Nodes of Ranvier
  21. 21. GLIA CELLS IN THE PNSPseudounipolar neurons Satellite cell nucleus Schwann cell nucleus
  22. 22. Glial ce lls in th e CN S are m ad e o fas tro cyte s , o ligo d e n d ro cyte s ,e p e n d ym al ce lls , an d m icro glialce lls .
  23. 23. Main functions of the astrocytes: -structural support -repair processes -blood-brain barrier -metabolic exchanges - scar-making cells
  24. 24. ASTROCYTES 86. Astrocytes, GFAP Capillary Astrocytes Perivascularlimiting membrane

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