Inflammation and repair · USMLE Step 1

During the vascular phase of acute inflammation, which change occurs first?

  1. Leukocyte chemotaxis
  2. Vasodilation
  3. Fibrosis
  4. Granulation tissue formation
Show answer and explanation

Correct answer: Vasodilation

The vascular phase begins with vasodilation and increased blood flow, which is the earliest change in acute inflammation.

Difficulty: Medium Question 2 of 22

Practice all 22 Inflammation and repair questions

Keep practicing

More Inflammation and repair questions