Why are some organs normally considered to be parts of two body systems only listed in one body system?
To keep the menu easy to use and because of some technical limitations we are currently listing each organ in only one system. For example, the pancreas is listed in the Digestive System and not the Endocrine System, where it could also be listed. Other examples include the ovaries (we’ve chosen the Reproductive over the Endocrine System) and the neurohypophysis (we’ve chosen the Nervous System over the Endocrine System).