CAJ | 학술논문

文章系统研究了疣吻沙蚕（Tylorrhynchus heterochaetus）的组织结构。组织学切片染色发现，疣吻沙蚕的体壁肌肉发达，有环肌及纵肌之分，并且头部体壁有丰富的粘液腺和感觉细胞，前者包括梨状腺与管状腺，能分泌黏液，湿润虫体，后者可帮助头部判断方向；疣足有丰富的毛细血管分布并着生刚毛；消化道中咽肌发达，食道短，胃不明显，分前后肠，前肠厚且多褶皱，利于碾磨食物，后肠薄且富含腺体，是消化吸收的主要场所；循环系统为典型的闭管式循环系统，由背腹大血管、节环血管和血管球构成；神经系统为链式神经系统，主要有背侧的1对咽上神经节及腹侧的腹神经链。
문장계통연구료우문사잠（Tylorrhynchus heterochaetus）적조직결구。조직학절편염색발현，우문사잠적체벽기육발체，유배기급종기지분，병차두부체벽유봉부적점액선화감각세포，전자포괄리상선여관상선，능분비점액，습윤충체，후자가방조두부판단방향；우족유봉부적모세혈관분포병착생강모；소화도중인기발체，식도단，위불명현，분전후장，전장후차다습추，리우년마식물，후장박차부함선체，시소화흡수적주요장소；순배계통위전형적폐관식순배계통，유배복대혈관、절배혈관화혈관구구성；신경계통위련식신경계통，주요유배측적1대인상신경절급복측적복신경련。
The histological structure of Tylorrhynchus heterochaetus was systemically observed. According to histological staining, there were strong muscles(circular muscles and longitudinal muscles)in the body wall of T. heterochaetus. The head's epiderm con-tained many mucous glands(pyriform gland and tubuliform gland)and sensory cells,whose function was to excrete mucus and to help head judge direction. There was a parapodia on each metamere of the worm,inserted with several setae and surrounded by abundant capillaries. The pharyngeal muscle in the pharynx of digestive tract was strong,with a short esophagus and an obscure stomach. The intestinal tract was divided into two parts(foregut and hindgut):the foregut was thicker than the hindgut and consisted of much eleva-tion,which was suitable for milling food,while the hindgut was much thinner but had abundant glands clustered in its inner surface, being important for digesting food and absorbing nutrition. The circulatory system was a typical closed vascular one,containing a big dorsal vessel,a big ventral vessel,a vascular sinus and some small protovertebral vessels. The nervous system consisted of a pair of suprapharygeal ganglions and a ventral nerve cord.