Surface Anatomy and Landmarks · USMLE Step 1

The umbilicus is used as a surface landmark for abdominal assessment. Which dermatome level does the umbilicus most closely correspond to?

  1. T6
  2. T10
  3. L2
  4. L4
Show answer and explanation

Correct answer: T10

The umbilicus lies at approximately the T10 dermatome. It serves as an important surface landmark for abdominal examinations.

Difficulty: Medium Question 3 of 20

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