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Glial Cells in the Optic Lobe - Table 1 |
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E. Eule, S. Tix 1, and K.-F. Fischbach
Institut für Biologie III, Schänzlestrasse 1, 79104 Freiburg
i. Br.,
Germany.
1 New address: California Institute of Technology, Pasadena, California
91125, USA
| glial cells of the optic lobe | position | number per optic lobe | size: ~ [µm] *) | shape of nuclei | cell body ~ [µm] *) | association with: |
|---|---|---|---|---|---|---|
| lamina | ||||||
| fenestrated glia (FGl) | lamina, fenestrated layer | ~ 250 | - | flattened | 5.2 x 1.6 flattened | pseudocartridges |
| pseudocartridge glia (PGl) | lamina, between fenestrated layer and cortex | - | - | - | 6.5 x 5.2 biggest in lamina, rounded | pseudocartridges |
| distal satellite glia (dSGl) | lamina, cortex | - | 2.7 x 1.8 | crescent | - **) | neuronal cell codies |
| proximal satellite glia (pSGl) | lamina, "interface-layer" between cortex and neuropile | ~ 750 | 4.3 x 1.4 | flattened, irregular | - **) | cortex, neuropile |
| epithelial glia (EGl) | lamina, neuropile | ~ 750 | length: 32 | elongated | 5.3 x 2.4 oval | bordering laminacartdridges |
| marginal glia (MGl) | lamina, proximal edge of neuropile | - | - | - | 3.2 x 2.7 rounded | margin layer of lamina |
| chiasmata | ||||||
| outer optic chiasm small glia (oCsGl) | outer optic chiasm | 30 - 35 | 5.6 x 1.1 | variably shaped, often flattened | - **) | visual axon bundles |
| outer chiasm giant glia (oCgGl) | outer optic chiasm | ~ 30, 25 - 37 | 6.7 x 5.7 | rounded | - **) | - |
| inner chiasm giant glia (oCgGl) | outer optic chiasm | ~ 26, 22 - 30 | 7.6 x 4.7 | elongated | - **) | - |
| medulla | ||||||
| medulla satellite glia (MSaGl) | medulla cortex between neuronal cell bodies | - | 4.9 x 3.2 | irregular pseudomultipolar | - **) | neuronal cell bodies |
| medulla neuropile glia (MNGl) | medulla "interface-layer" between cortex and neuropile | ~ 240 | 4 x 2.4 | irregular, ~ 9 µm extensions in neuropile | - **) | cortex, neuropile |
| lobula complex | ||||||
| lobula neuropile glia (LoNGl) | lobula "interface-layer" between cortex and neuropile | - | 4.2 x 2.4 | irregular | - **) | cortex, neuropile |
| lobulaplate neuropile glia (LPNGl) | lobulaplate "interface-layer" between cortex and neuropile | - | 4.2 x 2.4 | irregular | - **) | cortex, neuropile |
| lobulaplate satellite glia (LPSaGl) | lobulaplate between neuronal cell bodies | - | 4.9 x 3.2 | irregular pseudomultipolar | - **) | neuronal cell bodies |
| other glial cells | ||||||
| perineurial cells (PN) | envelope around the whole cns | - | 1 µm thick | thin layer | 2.5 x 1.4 oval | SuPnGl |
| subperineurial glia (SuPnGl) | underneath the perineurium | 8 - 14 | 8.6 x 2.1 | discoid | - **) | PN |
| tracheal glia (TrGl) | cortices of the whole cns | - | - | irregular | - **) | - |
*) Five to ten cells were evaluated.
**) The nucleus and the surrounding cytoplasm could not be distinguished. In these cases the nucleus filled most of the cell body volume.
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Glial Cells in the Optic Lobe
Table 1
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