Bile is secreted by hepatic cells. It passes through hepatic ducts and then stored and concentrated in a thin muscular sac. Gall bladder the pH of hepatic bile is 8.6, while the pH of gall bladder is 7.6 or 7.5 The salts present in bile juice are responsible for emulsification of fats in small intestine. These salts are mainly, salts of taurocholic acid and glycocholic acid. Horse and rats donot have gall bladder