Tag: duodenum

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Liver and Gallbladder

The liver is a large organ located at the top of the abdominal cavity and divided into several lobes. It is only found in vertebrates and it has several functions: detoxification, protein synthesis, and production of bile and other chemicals needed for digestion. Bile produced by the liver …

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 pancreas can be one of the more difficult structures for beginning anatomy students.  This is partly because it is a gland that doesn’t preserve well and can fall apart easily when handling the stomach or other organs.  In ideal specimens, the pancreas can be seen as a bumpy …

Stomach and Pyloric Sphincter Valve

The pyloric sphincter valve is found between the stomach and the duodenum of the small intestine.  It regulates the passage of food from the stomach into the small intestine.  On the dissected frog below, the black pin indicates the stomach and the red indicates the location of the …


The gallbladder is part of the biliary system (with the liver and the bile ducts) and has the primary job of storing bile.   Humans can live without a gallbladder, the removal of the organ is called a cholecystectomy.   Some animals don’t even have a gallbladder to …

Stomach and Duodenum

This image shows the stomach and the first section of the small intestine, called the duodenum.  The next section of the small intestine is the jejunum followed by the ileum which connects it to the large intestine.

Label the Liver

  A.  Esophagus          B.  Cardiac Sphincter Valve C.  Stomach             D.  Pancreas              E. Duodenum AB.  Gall Bladder         AC.  Liver

Label the Digestive System

    A.  Stomach      B.  Duodenum C.  Jejunum (small intestine) D.  Ascending Colon                 AB    Cecum AC.  Mesentery               AD.  Appendix AE.  Ileum (small intestine)