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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.