Tapeworm (Cestode)

Japanese: ジョウチュウ(条虫) - ジョウチュウ(英語表記)tapeworm
Tapeworm (Cestode)
A general term for flatworms belonging to the Cestoda class. All species are parasitic and have the characteristic of not having a digestive tract at any stage of development. Adults of parasitic human species usually live in the human intestine, causing abdominal pain, diarrhea, and nutritional disorders. All of these are multi-segmented tapeworms, consisting of one scolex and several to several thousand proglottides, some of which can reach a total length of 10 meters. Some of these resemble Sanada-himo (a string made of Japanese dung bean paste), and so it is said that tapeworms began to be called tapeworms around the Edo period when this string came into common use.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
条虫綱Cestodaに属する扁形動物の総称。すべての種類が寄生性で,いずれの発育段階においても消化管を有しないという特徴がある。人体寄生のものは,成虫が通常ヒトの腸管内に寄生して,腹痛や下痢,栄養障害などを起こす。これらはすべて多節ジョウチュウで,1個の頭節scolexと数個ないし数千個の片節(体節)proglottideとからなり,全長10mに達するものがある。それらのあるものは真田紐(さなだひも)に似ているところから,この紐が一般に使用されるようになった江戸時代ころから,ジョウチュウはサナダムシと呼ばれるようになったという。

出典 株式会社平凡社世界大百科事典 第2版について 情報

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