Final answer:
The stomach is suspended by the lesser omentum that attaches it to the liver and the greater omentum that attaches it to the posterior abdominal wall, within the peritoneal cavity.
Step-by-step explanation:
The structure that suspends the stomach from the dorsal wall of the abdominal cavity and from the inferior border of the liver is known as the lesser omentum. The lesser omentum provides a pathway for the structures such as blood vessels, lymphatic vessels, and nerves connecting to the liver. Additionally, the stomach is connected to the posterior abdominal wall by the greater omentum, which extends from the stomach's greater curvature. These connections are facilitated by the peritoneum, which is a serous membranous sac made up of squamous epithelial tissue that envelops the abdominal organs. The peritoneal cavity lies between these two layers of the peritoneum, containing a small amount of fluid that reduces friction.