Which ligaments are relevant when discussing connections between the duodenum and jejunum?

The suspensory ligament of the duodenum, also known as the ligament of Treitz, is a crucial structure in understanding the anatomical connection between the duodenum and jejunum. This ligament extends from the right crus of the diaphragm to the duodenojejunal flexure, which is the point where the duodenum transitions into the jejunum. It plays an important role in supporting this junction and maintaining the position of the small intestine within the abdominal cavity.

This ligament is clinically significant as it can be assessed during various surgical procedures and may also be involved in conditions that lead to intestinal obstruction. The presence of the suspensory ligament helps to underscore the distinction between the upper and lower parts of the small intestine, which is vital when diagnosing and treating gastrointestinal ailments.

The other ligaments mentioned do not have a direct connection to the junction between the duodenum and jejunum. The hepatoduodenal ligament supports the liver and connects it to the duodenum but does not relate to the jejunal connection. The round ligament of the liver and the falciform ligament are also associated with the liver's anatomy and do not pertain to the connections of the small intestine segments. Thus, the suspensory ligament stands out as