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Table 3 Morphological variables describing the somata, stem dendrites and the dendritic architecture of limb moving motoneurons

From: Somato-dendritic morphology and dendritic signal transfer properties differentiate between fore- and hindlimb innervating motoneurons in the frog Rana esculenta

Group Variables Cervical MNs Lumbar MNs
Soma * Roundness 3.9 ± 0.3 (3.9) 2.6 ± 0.3 (2.8)
  Surface (μm2) 9212 ± 1347 (7642) 6776 ± 652 (6885)
Stem dendrite Number 4.8 ± 0.6 (4) 5.7 ± 0.6 (5)
  Sum of diameters (μm) 26.4 ± 1.9 (27.8) 32.7 ± 3.9 (32.1)
Dendritic tree * Total number of branches 127 ± 3.7 (127) 216 ± 5.3 (226)
  * Max. order 9.9 ± 0.6 (9) 11.3 ± 0.4 (11)
  * Combined (total) dendritic length (μm) 32908 ± 3087 (32818) 54522 ± 7083 (60783)
  Surface (μm2) 141975 ± 6717 (141491) 193239 ± 18270 (163233)
  Mean parent length (μm) 145.4 ± 2.8 (138.6) 163.7 ± 6 (154.7)
  Mean distance to BRP (μm) 390.7 ± 8.8 (380.3) 495.3 ± 24.2 (448.6)
  Mean distance to ENDP (μm) 881.8 ± 40.1 (831.9) 973.5 ± 114.4 (881.4)
  Max distance of ENDP (μm) 1615.1 ± 100 (1596.3) 2034.5 ± 257.2 (1925.8)
  1. Variables with statistically significant differences between limb moving motoneurons of the two parts of the spinal cord are marked by asterisks (Mann–Whitney-test, p < 0.05). BRP and ENDP are branch point and end point of the dendritic trees. Values are means ± S.E.M.s, medians are in brackets.