Where is McBurney's point located in relation to the iliac crest and umbilicus?

McBurney's point is an important anatomical landmark used in clinical practice, particularly in the assessment of appendicitis. It is located approximately one-third of the distance from the iliac crest to the umbilicus, specifically on the right side of the abdomen. This point corresponds to the location of the base of the appendix at the right iliac fossa.

Understanding this anatomical relationship is crucial for practitioners when they perform a physical examination to ascertain signs of appendicitis, as tenderness at McBurney's point can indicate inflammation of the appendix. The correct positioning at one-third allows for more accurate localization of this significance, aiding in timely diagnosis and potential surgical planning if needed.

In contrast, the other options do not align with the anatomical location of McBurney's point, as they suggest other distances that do not correspond with the established knowledge of human anatomy.