| 摘要: |
| 对山羊胚胎脊髓灰质形成和发育的形态学变化进行了系统研究。结果表明：山羊脊髓神经管闭合以后，其组织发生持续近20 d才形成完整的3层同心圆结构；山羊脊髓神经管的组织发生和脊髓灰质的形成在时间上有很大程度的重叠性；脊髓灰质各结构形成和发育的规律也不完全一致，有些结构发生早，而神经元分化较晚，如侧角、胶状质；有些结构发生虽然晚，但其中的神经元胞体分化和发育则较早，如CIarke氏背核；有些结构发生早，神经元发育也早，如腹角运动神经元。 |
| 关键词: 组织发生 脊髓灰质 山羊胚胎 |
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| 基金项目:国家自然科学基金资助项目(39830280) |
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| Histogenesis and development of spinal cord in prenatal goat |
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| Abstract: |
| Spinal cord of prenatal goat were observed to find the histogenesis and development by H-E method.The results are as the followings:① Since the nerve duct inosculated,the histogenesis persisted for 20 days and three stratum round structure were constituted.② The overlapped time is longer between the histogenesis of nerve duct and the forming of spinal cord of prenatal goat.③ The forming time is incompletely consistenct with the developing time of spinal cord.Some structure occurs early and the neurons emerge lately,such as the substantia gelatinosa.Some structure occurs lately,and the neurons emerge earlier,such as the dorsal nucleus of Clarke. |
| Key words: histogenesis spinal cord prenatal goat |
