1. CNS Sequence
CNS Histology
March 9, 2009

2. Spinal cord Dorsal horns: Interneurons Ventral horns: Motor neurons
Lateral horns:
Sympathetic neurons Parasympathetic (S2-4) neurons
DRG: Sensory (pseudounipolar) neurons
Autonomic ganglia: Post ganglionic neurons with unmyelinated axons. Sympathetic: paravertebral ganglia Parasympathetic: In organs

3. 66a Thoracic Spinal Cord Dorsal median sulcus Dorsal horn Lateral horn
Ventral horn
Ventral median fissure

4. 66a Thoracic Spinal Cord Neuron in Lateral Horn
Neurons in ventral Horn

5. #65-1N Spinal cord and DRG Dorsal horn Lateral horn Ventral horn
Dorsal root ganglion (DRG)

6. 65-1N Motor neurons, glial cells and neuropil

7. Dorsal root ganglion cells

8. Brain Cerebrum Cerebellum 3rd ventricle 4th ventricle Pons
Sulcus (sulci) Gyrus (gyri)
3rd ventricle
Cerebellum
4th ventricle
Pons
Medulla oblongata

9. Cerebrum and Cerebellum77

10. #77 Cerebellum #76b Cerebrum
C: Cortex of gray matter W: White matter C C C W W W

11. #77 Cerebellum
Cortex
White matter

12. #77 Cerebellum ML GL WM
Purkinje neurons (cells)

13. #77a Cerebellar Cotex

14. #76 Cerebrum
White matter
Cortex of gray matter

15. #76
Cerebral cortex
Ross and Pawlina, p.311

16. C C Cerebellum Cerebrum W W C: Cortex of gray matter W: White matter
Purkinje cells (neurons) C C
Pyramidal cells (neurons) W W

17. #NP004N Hippocampal region CA: Cornus ammonis
Choroid plexus
CA2
CA3
Dentate gyrus
Hippocampus
CA1

18. 3 layers of Hippocampal region
Polymorphic layer
Pyramidal cell layer
Molecular layer
Pyramidal cells

19. 3 layers of Dentate gyrus
Molecular layer
Molecular layer (dendrites of granule cells)
Granule cell layer (neurons)
Polymorphic layer
Polymorphic layer (interneurons)

20. #74 Sympathetic ganglion cells #75 Parasympathetic ganlion cells
Seminal vesicle

21. Sensory and Autonomic Neurons (DRG) (Parasympatheitc)