Kusakabe T
Department of Anatomy, Yokohama City University School of Medicine, Japan.
Anat Embryol (Berl). 1992;185(1):39-44. doi: 10.1007/BF00213599.
Intimate apposition of the glomus and smooth muscle cells (g-s connection) was found in almost all glomus cells of the carotid labyrinths in juvenile bullfrogs, Rana catesbeiana. There were three types of g-s connection: between thin processes (0.1-0.2 micron in width) without dense-cored vesicles of glomus cells and smooth muscle cells; between thick processes (1.0-1.5 microns in width) with dense-cored vesicles of glomus cells and smooth muscle cells; and between the tongue-like projections of smooth muscle cells and the flat surface of the glomus cell. In some cases, a single glomus cell made g-s connections with several smooth muscle cells. Exocytosis often occurs at the g-s connection. Afferent and efferent synapses were found on the glomus cells with g-s connections. Reciprocal synapses were also observed. On the basis of these findings, the second and third types of g-s connection are presumed to participate in vascular regulation.
在牛蛙（Rana catesbeiana）幼体的颈动脉迷路中，几乎所有的球旁细胞都发现了球旁细胞与平滑肌细胞的紧密连接（g-s连接）。g-s连接有三种类型：球旁细胞无致密核心小泡的细突起（宽度为0.1-0.2微米）与平滑肌细胞之间；球旁细胞有致密核心小泡的粗突起（宽度为1.0-1.5微米）与平滑肌细胞之间；平滑肌细胞的舌状突起与球旁细胞的平坦表面之间。在某些情况下，单个球旁细胞与多个平滑肌细胞形成g-s连接。g-s连接处常发生胞吐作用。在有g-s连接的球旁细胞上发现了传入和传出突触。也观察到了相互突触。基于这些发现，推测第二和第三种类型的g-s连接参与血管调节。
