CNS Sequence
CNS Histology
March 8, 2010
Spinal cord
Dorsal horns: InterneuronsVentral horns: Motor neurons Lateral horns: Sympathetic neurons Parasympathetic (S2-4) neuronsDRG: Sensory (pseudounipolar) neuronsAutonomic ganglia: Post ganglionic neurons with unmyelinated axons. Sympathetic: paravertebral ganglia Parasympathetic: In organs
65-2 Lumbar Spinal Cord, H&E
D.R.G.
Spinal Cord
Dura mater
Myelinated nerves
#65-1N Spinal cord and DRG
Ventral horn
Lateral horn
Dorsal horn
Dorsal root ganglion (DRG)
66a Thoracic Spinal Cord
Ventral median fissure
Dorsal horn
Lateral horn
Ventral horn
Dorsal median sulcus
66a Thoracic Spinal Cord
Neurons in Lateral Horn
Neurons in ventral Horn
65-1N Motor neurons, glial cells and neuropil
Glial cells
Neuropil
Dorsal root ganglion cells
Cerebrum
Sulcus (sulci) Gyrus (gyri)
Cerebellum
Pons Medulla oblongata
3rd ventricle
4th ventricle
Brain
Cerebrum and Cerebellum
76b
77
#77 Cerebellum #76b Cerebrum
W WW
CC
C
W
C: Cortex of gray matter W: White
matter
#77 Cerebellum
Cortex
White matter
#77 Cerebellum
Purkinje neurons (cells)
#77a Cerebellar Cortex
#76
Ross and Pawlina, p.311
Cereb
ral cortex
Cerebellum Cerebrum
CC
W
W
Purkinje cells (neurons)
C: Cortex of gray matter W: White matter
Hippocampal Formation
Lateral View Posterior View
#NP004N Hippocampal regionCA: Cornus ammonis
CA1
CA3
CA2
Dentate gyrusHippocamp
us
Choroid plexus
3 layers of Hippocampal region
Molecular
layer
Pyramidal cell layer
Polymorphic layer
Pyramidal cells
3 layers of Dentate gyrus
Mol
ecul
ar
laye
r
Granule cell layer (neurons)
Polymorphic layer Polymorphic layer (interneurons)
Molecular layer (dendrites of granule cells)
#74 Sympathetic ganglion cells #75 Parasympathetic ganglion cells
Seminal vesicle
Sensory and Autonomic Neurons (DRG) (Parasympathetic)