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CHAPTER 6 - NERVOUS TISSUE
Histology Guide
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MICROGRAPH

NAME
EM 400 Dendritic Spines
TISSUE
Cerebellum
(rat)
IMAGE SIZE
12,335 x 16,789 pixels
621 MB
FILE SIZES
132.2 MB (grayscale)
185.7 MB (color)
MAGNIFICATION
x19,000
PIXEL SIZE
0.8409 nm
SOURCE
Alan Peters
Department of Anatomy & Neurobiology
Boston University School of Medicine
Boston, Massachusetts

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EM 400 Dendritic Spines

Dendritic Spines

Transmission electron microscopy (TEM) of a terminal dendrite from a Purkinje cell in the cerebellum.

Dendritic spines are small protrusions found on the dendrites of many neurons. They serve as primary sites for synaptic connections with other neurons, but their presence varies depending on the type of neuron.

  • (green) - a terminal branch extends down the middle of this micrograph
  • Dendritic Spines (blue) - increase the surface area for synapses
    • Two mushroom-shaped spines (,) emerge from the dendrite
    • Other spines (,) appear as isolated profiles
  • Axon Terminals (,; orange) - form synapses with dendritic spines
    • Synaptic Vesicles (purple) - contain neurotransmitters
  • (yellow) - unmyelinated axons
  • (tan)

Courtesy of Alan Peters, Department of Anatomy & Neurobiology, Boston University School of Medicine, Boston, MA.

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