ENZYME HISTOCHEMICAL STUDY ON THE DEVELOPING MOTOR NERVE CELLS IN THE SPINAL CORD OF CHICK EMBRYO

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概要

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• The motor column of spinal cord in chick embryos after stage 25 becomes thick to form the lateral motor column in limb levels. Hofmann's nucleus is established in stage 34. The visceral motor cells originate from the motor column of the thoracal region. They cross dorsomedially over the arcuate fibers and the band of alkaline phosphatase at the dorsoventral boundary and finally settle at the dorsolateral angle of central canal. The lateral motor column and Hofmann's nucleus show an intense activity of cholinesterase but none of alkaline phosphatase. After stage 36, succinate dehydrogenase, adenosine triphosphatase and cytochrome oxidase tend to concentrate in them. Visceral motor cells, motor column of thoracal segment and medial motor column in limb levels are moderately positive in cholinesterase and alkaline phosphatase, but weak in succinate dehydrogenase, adenosine triphosphatase and cytochrome oxidase. Visceral motor center shows monoamine oxidase activity during stage 32-34. These suggest that the cells of lateral motor column and Hofmann's nucleus have a gradual shift towards aerobic state from stage 36, while the other groups of motor cells remain anaerobic.

• 日本組織細胞化学会の論文

著者

• Ito Tomoko

  Department Of Anatomy Tohoku University School Of Medicine Sendai

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• ENZYME HISTOCHEMICAL STUDY ON THE DEVELOPING MOTOR NERVE CELLS IN THE SPINAL CORD OF CHICK EMBRYO

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