Organ system anatomy · USMLE Step 1

A patient presents with right lower quadrant pain. McBurney’s point corresponds to which anatomical landmark?

  1. Midpoint between ASIS and umbilicus
  2. One-third the distance from ASIS to umbilicus
  3. Two-thirds the distance from ASIS to umbilicus
  4. Intersection of midclavicular line and costal margin
Show answer and explanation

Correct answer: One-third the distance from ASIS to umbilicus

McBurney’s point is one-third of the distance from the anterior superior iliac spine to the umbilicus. It corresponds to the location of the base of the appendix.

Difficulty: Medium Question 3 of 20

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