抄録
The locations of motoneurons of the tibialis anterior muscle and the gastrocunemius muscle in the rat spinal cord have been determined by using retrograde transport of the horseradish peroxidase.
The horseradish peroxidase was injected into tibialis anterior muscle on right side and gastrocunemius muscle on left side. At 24-48 hours after injection, the spinal cord was removed, and the serial coronal sections were cut at 100μm and stained with diaminobenzidine. The number of the labeled motoneuron were analyzed bilaterally.
Following results were obtained: Most of the labeled motoneuron of the tibialis anterior muscle and the gastrocunemius muscle were distributed throughout L4 and L5 respectively with significant difference (p<0.01).
The labeled motoneurons of tibialis anterior muscle were located in more ventral side than that of gastrocunemius muscle (p<0.01).
