摘要
应用乙酰胆碱酯酶显示的华支睾吸虫神经构造十分清晰,呈左右对称排列。它由中枢神经节、神经连合、纵行神经干、神经联系以及双极和多极神经细胞所组成。中枢神经节位于咽下方的两侧,由粗大的神经连合相连。从中枢神经节向前伸出咽、前背、前腹、前侧4对神经干;向后伸出后背、后腹、后侧3对神经干。以后腹神经干为最粗大,并从其伸出分支分布于腹吸盘、消化道、卵黄腺和生殖器官。后3对纵行神经干又由许多横向神经联系将其互相连接构成神经网。体内广泛分布双极和多极神经细胞,前者较小,数目众多,而后者略大,数目较少。
The nervous system of Clouorchis sinensis was studied histochemically using acetylthio-choline iodide as a subtrate The central nervous system is composed of two cerebral ganglia situated postero-dorsally to the pharynx and connected by a transverse commissure. From the cerebral ganglia four pairs of nerves proceed cephalad. Of these the innermost pair are the short. stout pharyngeal nerves. The remaining three pairs of anterio nerves include the antero-dorsal, anteroventral and antero-lateral nerves, named according to their emergence from the cerebral ganglia (Figs. 1-2). The anterior nerves contribute to the formation of the circum-oral ring located in the oral sucker.The post-cephalic longitudinal nerves consist of 3 pairs of nerve cords, namely, postero-dotsal, postero-ventral and postero-lateral. The postero-ventral ones are a pair of very stout, long nerves, the most prominent of the nervous system. They run posteriorly parallel to each other till they reach the end where they give off nervous branches supplying the excretory bla-der (Fig. 3). The muscles of acetabulum are innervated by nerve fibres stemming directly from the postero-ventral cords, and forming thereby possible neuromuscular junctions (Fig. 4). All the posterior nerve cords are joined with each other by a number of thin transverse connectives throughout their course, the connectives in turn are further connected to one another by some still thinner longitudinal connectives forming a complicate nerve network.At least two types of nerve cells were observed in the fluke, bipolar nerve cells are lafge in number but small in size (15.6×8.3μm), whereas the multipolar cells are smaller in number but larger in size (27.3×15.8μm) (Fig. 5).
出处
《动物学报》
SCIE
CAS
CSCD
1991年第1期47-51,共5页
ACTA ZOOLOGICA SINICA
关键词
华支睾吸虫
神经系统
乙酰胆碱酯酶
Clonorchis sinensis, Nervous system, Acetylcholinesterase, Nerve cell, Hi-stochemical localization.
