尾蚴
| A+醫學百科 >> 尾蚴 |
吸蟲綱有些動物的末期幼蟲，由第二代包蚴產生或由雷蚴直接產生.身體由長圓形的軀干和細長的尾部組成.有口吸盤及腹吸盤，腸道分兩支.還有若干焰細胞和一對排泄管，在軀干后端會合為排泄囊，向尾內延伸為一細長的排泄管至尾部末端開孔.體內的生殖細胞將來發展為成蟲的生殖系統.尾蚴鉆出中間寄主后，在水中直接鉆入終末寄主或第二中間寄主.有些種類的尾蚴附于水草等作物，脫去尾部分泌包囊，被終末寄主食入而進到體內.GOOGLE英文翻譯:The end of Trematoda larvae of some animals from the second-generation packet-Lei larva larva produced or by directly elected. The body by a long round torso and slender tail. There are oral sucker and ventral sucker, intestinal sub-2. Huan A number of flame cells and a pair of excretory duct, in the trunk back to join the excretory bladder, to be extended as a slender tail of the excretory duct to the tail end of the hole. the body's reproductive cells for the future development of adult reproductive system. cercaria drill out the intermediate host, the host in the water directly to penetrate into the terminal or the second intermediate host. Some types of cercariae attached to aquatic plants and other crops, off the tail secretion cysts, was the staple food on entry into the terminal send into the body.
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