Chille duct

...The lymphatic trunk into which lymph flows from the entire body of a mammal, except for the right upper half of the body, passes through the thoracic cage and usually empties into the left subclavian vein, so it is called the thoracic duct. The lymphatic duct, which starts from the villi of the intestinal mucosa, runs between the mesenteries and joins the thoracic duct, but since the lymph is cloudy due to chyle, which is fat droplets absorbed during digestion, it is also called the chyle duct. In mammals and birds, the flow of lymph is prevented from backflow by the contraction of the lymphatic duct itself and the action of valves located throughout the duct, but in lower vertebrates such as reptiles, there are no valves, and the lymphatic duct has a special device called the lymph heart, which pumps the lymphatic duct. ...

*Some of the terminology that mentions "chyle duct" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…哺乳類の右側上半身を除く全身のリンパ液が流入するリンパ本幹は，胸郭内を通り通常左鎖骨下静脈に注ぐので，胸管thoracic ductと呼ばれている。腸粘膜の絨毛（じゆうもう）から始まるリンパ管は，腸間膜の間を走り胸管に合流するが，消化時吸収された脂肪滴の乳糜（にゆうび）によりリンパ液が白濁しているので，乳糜管chyle ductともいう。リンパ液の流れは，哺乳類や鳥類ではリンパ管自体の収縮と随所にある弁の働きで逆流が防がれているが，爬虫類以下の下等脊椎動物では弁がなく，リンパ心臓lymph heartという特殊な装置がリンパ管にあって，そのポンプ作用による。…

※「chyle duct」について言及している用語解説の一部を掲載しています。

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