Miranda-Neto M H, Brancalhão R M, Chopard R P, Molinari S L
Departamentos de Ciências Morfofisiológicas, Universidade Estadual de Maringá (UEM), Maringá PR, Brasil.
Arq Neuropsiquiatr. 1994 Mar;52(1):41-5. doi: 10.1590/s0004-282x1994000100007.
Stereomicroscopic and microscopic study showed human arachnoid granulations with different morphology that we classified in simple and lobate. Simple granulations were small and completely involved by fibrous capsule that delimited a continuous subdural space from the pedicle to the apex. Lobate granulations were bigger than the simple; in the apex the fibrous capsule was thinner than in other regions, and fused with granulation periphery causing interruption of subdural space. Simple granulations might be an initial development stage; lobate granulations would represent a higher development stage, with ideal morphologic structure for absorption of the CSF.
立体显微镜和显微镜研究显示，人类蛛网膜颗粒具有不同形态，我们将其分为简单型和叶状型。简单型颗粒较小，完全被纤维囊包裹，该纤维囊从蒂部到顶端界定了一个连续的硬膜下间隙。叶状颗粒比简单型颗粒大；在顶端，纤维囊比其他区域薄，并与颗粒周边融合，导致硬膜下间隙中断。简单型颗粒可能是初始发育阶段；叶状颗粒则代表更高的发育阶段，具有吸收脑脊液的理想形态结构。
