Final answer:
The gastrosplenic ligament connects the spleen to the stomach, separating the left upper quadrant of the abdomen into two peritoneal sacs.
Step-by-step explanation:
The gastrosplenic ligament connects the spleen to the greater curvature of the stomach. More specifically, this ligament separates the left upper quadrant of the abdomen into two sacs: the left part of the greater sac, which is the main cavity of the peritoneum, and the lesser sac, also known as the omental bursa. The ligament provides a pathway for blood vessels and other structures that communicate between the stomach and the spleen.