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胆汁是由肝细胞生成。生成后的胆汁一部分从肝管流出经总胆管到十二指肠(这种由肝内直接分泌的胆汁称为肝胆汁);另一部分胆汁由肝管转入胆囊管而贮存于胆囊,当消化食物时,再由胆囊排出至十二指肠(这种在胆囊中贮存过的胆汁称为胆囊胆汁)。肝细胞是不断地分泌胆汁的,但在非消化期间,肝胆汁都流入胆囊内贮存。胆囊可吸收胆汁中的水分和无机盐,使肝胆汁浓缩4～10倍而成为胆囊胆汁。所以肝胆汁和胆囊胆汁的基本成分相同。
Bile is generated by liver cells. After the formation of bile part of the outflow from the hepatic duct through the common bile duct to the duodenum (this direct secretion of bile from the liver is called liver bile); the other part of the bile from the liver into the cystic duct and stored in the gallbladder, when digestion Food, then discharged from the gallbladder to the duodenum (this bile stored in the gallbladder called gallbladder bile). The hepatocytes constantly secrete bile, but during the non-digestive period, the liver bile flows into the gall bladder for storage. Gallbladder can absorb bile in the water and inorganic salts, so that liver and gallbladder 4 to 10 times the concentration of gallbladder bile. Therefore, the basic composition of liver and gallbladder bile the same.