Neural tissue consists of neurons and glial cells. Glial cells in the peripheral nervous system include satellite cells and Schwann cells. Glial cells in the central nervous system are made of astrocytes, oligodendrocytes, ependymal cells, and microglial cells. Main functions of the astrocytes are structural support, repair processes, forming the blood-brain barrier, metabolic exchanges, and scar formation.

2. Glial Ce ll
Neural tissue consists of:
n e u ro n s and glial ce lls
N e u ro n s

3. MAIN TYPES OF NEURONES,
ACCORDONG TO THE MORPHOLOGY:
UNIPOLAR
BIPOLAR
PSEUDOUNIPOLAR
MULTIPOLAR

4. PSEUDOUNIPOLAR NEURONES
76. Spinal ganglion, HE. (low power magnification)
Pseudounipolar neurones
(perikaryon)
Peripheral nerve fibers

5. PSEUDOUNIPOLAR NEURONES
76. Spinal ganglion, HE. (high power magnification)
Pseudounipolar neurones-perikaryon
(nucleus, nucleolus)
Satellite cell nucleus
Peripheral nerve fibers A-cell
D-cell
Axon
Schwann cell nucleus

6. MULTIPOLAR NEURONES I.
79. Autonomic ganglion, Silver-impregnation
Perikaryon
Nerve fibers

7. Central canal
Ventral horn
(Deiters motoneurones)
Segmet

8. MULTIPOLAR NEURONES IIa.
Deiters motoneurones
80. Spinal cord, HE (low power magnification)
Central canal
Gray matter
White matter
Ventral horn
(Deiters motoneurones)

9. MULTIPOLAR NEURONES IIb.
Deiters motoneurones
80. Spinal cord, HE (medium power magnification)
Multipolar
neurones Ventral horn
White matter

10. MULTIPOLAR NEURONES IIc.
Deiters motoneurones
80. Spinal cord, HE (high power magnification)
Multipolar
neurone
Glial cell
nucleus
Capillary

11. MULTIPOLAR NEURONES IId.
Deiters motoneurones
80. Spinal cord, HE (high power magnification)
Nucleus
Multipolar
neurone
Nucleolus
Glial cell
nucleus
Capillary

12. MULTIPOLAR NEURONES IIe.
Deiters motoneurones
80. Spinal cord, HE (high power magnification)
Glial cell
nucleus
Multipolar
neurone
Nissl-substance
Nucleolus
Nucleus

13. NEUROGLIA
GLIA CELLS GLIA CELLS
IN THE PNS IN THE CNS
- Schwann cell - Oligodendrocytes
- Satellite cell - Microglia
- Astrocyte
- Ependyma

14. Myelin formation in nerve fibers:
Schwann-cell Oligodendrocyte
(PNS) (CNS)

15. PERIPHERAL NERVE IN TRANSVERSE SECTION

16. PERIPHERAL NERVE IN TRANSVERSE SECTION
Paraneurium
Epineurium
Perineurium
Adipose tissue Endoneurium
Artery, Vein

17. PERIPHERAL NERVE IN TRANSVERSE SECTION
72. Peripheral nerve, HE. (low power magnification)
Perineurium
Schwann-cell
nucleus
Axon
Myelin sheath
Nucleus of fibrocyte

18. PERIPHERAL NERVE IN LONGITUDINAL SECTION

19. SCHMIDT- LANTERMANN CLEFTS

20. PERIPHERAL NERVE IN LONGITUDINAL SECTION
73. Peripheral nerve, HE.
Nucleus of fibrocyte
Node of Ranvier Schwann cell
nucleus
Axon

21. PERIPHERAL NERVE IN LONGITUDINAL SECTION
73. Peripheral nerve, HE.
Schwann cell
nucleus
Nodes of Ranvier

22. GLIA CELLS IN THE PNS
Pseudounipolar neurons
Satellite cell nucleus
Schwann cell nucleus

23. Glial ce lls in th e CN S are m ad e o f
as 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 glial
ce lls .

24. Main functions of the astrocytes:
-structural support
-repair processes
-blood-brain barrier
-metabolic exchanges
- scar-making cells

25. ASTROCYTES
86. Astrocytes, GFAP
Capillary
Astrocytes
Perivascular
limiting membrane