What is the section of an organ farthest from its opening called?

The term "fundus" refers specifically to the part of an organ that is farthest from its opening. In various anatomical contexts, such as the stomach or uterus, the fundus denotes the upper, rounded part that is opposite the entrance. This is important in medical coding and anatomy since understanding these specific terms helps in accurately describing procedures, diagnoses, and the contexts in which various organs function.

For example, in the context of the stomach, the fundus is where gas accumulates and is positioned above the body of the stomach, away from the duodenum. Similarly, in the uterus, the fundus is the superior part positioned above the openings of the fallopian tubes. Recognizing and correctly identifying the fundus assists healthcare professionals in communicating effectively about patient conditions, treatments, and anatomical structures.