Whitehead Armand T
Department of Entomology and Parasitology, University of California, Berkeley, California.
J Morphol. 1971 Dec;135(4):483-505. doi: 10.1002/jmor.1051350405.
The salivary gland of Periplaneta americana (L.) is innervated from both the stomatogastric nervous system (SNS) and subesophageal ganglion (SEG). Methylene-blue preparations, histological sections and electron microscopy revealed a pair of nerves from the SEG, each of which contains two axons 5-7 μ in diameter, and these are accompanied by several smaller ones. The nerves going to the salivary glands from the SNS contain a dozen or more axons, each less than 2 μ thick. Axons from two sources innervate the efferent salivary ducts, the acini, the anterior ends of the salivary reservoirs, and the reservoir suspensory muscles. A nerve which has reached an acinus forms a plexus upon its surface. Electron micrographs disclose penetration of axons with or without glial wrappings, into the intercellular spaces between gland cells. Axons without glial wrappings have been observed in intimate contact with gland-cell membranes, and several areas which resemble synaptic junctions have been seen.
美洲大蠊（Periplaneta americana (L.)）的唾液腺由口胃神经系统（SNS）和咽下神经节（SEG）共同支配。亚甲蓝制剂、组织切片和电子显微镜显示，咽下神经节发出一对神经，每条神经包含两条直径为5 - 7微米的轴突，并有几条较细的轴突伴随。来自口胃神经系统的支配唾液腺的神经含有十几条或更多轴突，每条轴突直径小于2微米。来自两个来源的轴突支配唾液腺的传出导管、腺泡、唾液腺储液器的前端以及储液器悬肌。到达腺泡的神经在其表面形成神经丛。电子显微镜照片显示，有或没有神经胶质包裹的轴突会穿透到腺细胞之间的细胞间隙中。已观察到没有神经胶质包裹的轴突与腺细胞膜紧密接触，并且发现了几个类似突触连接的区域。
