Gall Bladder and Bile Duct

The gall bladder is a structure found under the liver of many vertebrates, including humans, where it stores bile that is secreted by the liver.  Bile is transported to the duodenum through the bile duct; its main function is to aid in the digestion of fats.

In humans, the gall bladder is sometimes removed as a treatment for gallstones.   This procedure is called  a cholecystectomy.

The image below shows the gall bladder and the duodenum which are both stained green due to the presence of bile.

Gall bladder