[Development of the human facial nucleus: a morphometric study].
[Development of the human facial nucleus: a morphometric study].
复制标题
[人类面部核的发育：形态测量研究]。
DOI：
--
复制
发表时间：
1989
期刊：
影响因子：
--
通讯作者：
K. Maekawa
中科院分区：
文献类型：
--
作者：
T. Nara;N. Goto;H. Nozaki;K. Maekawa
本研究采用8例孕21、23、27、30、33、34、35和40周胎儿、1例2月龄婴儿和1例63岁成人脑的完整连续切片，对人面神经核的发育进行了研究。采用显微镜、电子求积仪和计算机进行的形态测量分析揭示了人类面神经核发育的以下三点。(1)孕30周后，神经元的体积、尼氏体的数量、突起的长度和神经突起的数目逐渐增加。(2)孕21周以后，面神经核分为背侧、内侧、中间、腹内侧、腹外侧和外侧亚核。内侧亚核神经元的平均大小小于其他亚核。(3)无论年龄大小，神经元的数量几乎相同。在妊娠21和33周，10%的总神经元变性。
The development of the human facial nucleus was studied using complete serial sections of the brains of 8 fetuses at 21, 23, 27, 30, 33, 34, 35, and 40 weeks of gestation, a 2-month-old infant and a 63-year-old adult. Morphometric analysis adopting a microscope, an electronic planimeter and a computer revealed the following three points as to the development of the human facial nucleus. (1) The size of neurons, the amount of Nissl body, the length of processes and neuropil increased gradually after 30 weeks of gestation. (2) The facial nucleus was divided cytoarchitectonically into dorsal, medial, intermediate, ventromedial, ventrolateral and lateral subnuclei at 21 weeks of gestation onwards. The mean neuronal size of the medial subnucleus was smaller than that of other subnuclei. (3) The number of neurons was practically the same regardless of age. At 21 and 33 weeks of gestation, 10% of total neurons was degenerated.