Pancreas
The duodenum is the first part of the small intestine, it lies just under then stomach.
Heart lies in mediastinum. The wall of mediastinum and phrenic nerve lies between the heart and lungs. Phrenic nerve supply to the diaphragm.
The pancreas lies beneath the stomach and connects to the rest of the digestive system through the small intestine at the duodenum.
Between the stomach-small intestine is the Pyloric. Between the small intestine and large intestine is the ileo-caecal. Then 2 sphincters at the end of the "process:" one to send messages to your brain to tell you to go to the bathroom and one to "control" yourself.
The pancreas lies behind the stomach in the abdomen. It is positioned horizontally, with the head of the pancreas nestled in the C-shaped curve of the duodenum, which is the first part of the small intestine.
In anatomy of the digestive system, the jejunum is the central of the three divisions of the small intestine and lies between the duodenum and the ileum. The change from the duodenum to the jejunum is usually defined as the ligament of Treitz.
The triangular organ that lies between the stomach and the liver is called the gallbladder. It stores and concentrates bile produced by the liver, releasing it into the small intestine to aid in digestion.
upper right quad
The spinal cord lies just below the medulla oblongata.
The liver rests on top of the stomach, and the stomach lies on the large intestine.
spleen
In adults the jejunum is found in the small intestine and lies between the duodenum and the ileum. The lining of the jejunum absorbs small food particles which have previously been digested in the duodenum.