Anatomic Consideration

The liver, stomach, and spleen are the organs in the supramesocolic compartment of the abdomen. The spleen and the liver develop within the peritoneal ligaments known as the dorsal mesogastrium and ventral mesogastrium, respectively. The dorsal mesogastrium attaches the primitive foregut to the retroperitoneum while the ventral mesogastrium attaches the foregut to the anterior abdominal wall and the diaphragm.2 The foregut later develops to form the stomach and duodenum. Part of the dorsal mesogastrium fuses with the posterior abdominal wall anterior to the left kidney to anchor the body of the pancreas, the spleen, and the stomach as the splenorenal and gastrosplenic ligaments. The remainder of the dorsal mesogastrium evaginates to create a recess that separates from the peritoneal cavity, known as the omental bursa or lesser sac. The caudal recess of the bursa fuses with the transverse colon and forms the gastrocolic ligament and the greater omentum.

Thus, the dorsal mesogastrium gives rise to several peritoneal ligaments, including the splenorenal, gastrosplenic and gastrocolic ligaments and the greater omentum.

The ventral mesogastrium develops to form (a) the lesser omentum (gastrohepatic and hepatoduodenal ligaments) with the free edge defining the epiploic foramen of the lesser sac; (b) the falciform ligament between the liver and anterior abdominal wall; and (c) the coronary ligament between the liver and the diaphragm.

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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