Which branch of the celiac trunk supplies blood to the spleen, part of the stomach, and pancreas?

The branch of the celiac trunk that supplies blood to the spleen, part of the stomach, and pancreas is the Splenic artery.

Here are the steps to understand this:

1. The celiac trunk is a major branch of the abdominal aorta, the main blood vessel supplying the abdominal organs.

2. The celiac trunk further divides into three main branches: the left gastric artery, the common hepatic artery, and the splenic artery.

3. The left gastric artery supplies blood to the lesser curvature of the stomach. The common hepatic artery supplies blood to the liver, stomach, and parts of the duodenum and pancreas.

4. The splenic artery, as its name suggests, supplies blood to the spleen. But it also supplies blood to the greater curvature of the stomach and parts of the pancreas.

So, the answer to your question is the splenic artery.