Dimensions of simple spines on spiny neurons.
(Adapted from Fiala and Harris, 1999.)
|
Neuron
|
Total length
(µm)
|
Neck diameter (µm)
|
Neck length
(µm)
|
Total volume (µm3)
|
Total surface area (µm2)
|
PSD area (µm2)
|
PSD:head area ratio
|
|---|
|
Cerebellar Purkinje cell
|
0.7-3.0
|
0.1-0.3
|
0.1-2
|
0.06-0.2
|
0.7-2
|
0.04-0.4
|
0.17+0.09
|
|
CA1 pyramidal cell
|
0.2-2
|
0.04-0.5
|
0.1-2
|
0.004-0.6
|
0.1-4
|
0.01-0.5
|
0.12+0.06
|
|
Visual cortex pyramidal cell
|
0.5-3
|
0.07-0.5
|
--
|
0.02-0.8
|
0.5-5
|
0.02-0.7
|
0.10+0.04
|
|
Neostriatal spiny neuron
|
--
|
0.1-0.3
|
0.6-2
|
0.04-0.3
|
0.6-3
|
0.02-0.3
|
0.125
|
|
Dentate gryus granule cell
|
0.2-2
|
0.05-0.5
|
0.03-0.9
|
0.003-0.2
|
0.1-3
|
0.003-0.2
|
--
|
