대뇌전두엽안와부(Brodmann 제11피질분야) 뇌구벽부의 세포구축학적 연구

Abstract

This investigation is a study on the Cvtoarchiectonics of the wall of the cerebral sulcus in Orbital area of 121 Korean brains (68 brains of the male, from the newborn to the age of 85, 53 brains of the female from the newborn to the age of 61). The thickness of the total cortex and each cortical layer. the relative neuron density and the relative glia density in ClOO,u)3 of each cortical layer and the relative total neuron and glia densities of the cortex were observed. and the results were summerized as follows; 1. The mean thickness of the cortex in the 0-1 year group was 1. 43-1. 83mm. which was 80-86% of the adult cortex thickness and increased to 1. 701. 77mm. in the 2-5 year group which was 98% of the adult and thereafter it increased to the mean thickness of the adult cortex in the 6-10 year group and thereafter it was relatively stable. The mean thickness of the adult cortex was year group and thereafter it was relatively stable. Department 0/ Anatomy, College 0/ Medicine Seoul National University, Seoul, Korea. 1.77mm. The thickness of the cortex increased rapidly as the brain weight increased to 1, 1001, 1999ms and thereafter it became to decrease. 2. The highest neuron density in the 0-1 year group decreased rapidly to the adult mean value in the 6-10 year group and thereafter it was relatively stable. The mean neuron density of the adult