Organ system anatomy · USMLE Step 1

Which structure is located at the hilum of the lung?

  1. Pulmonary vessels
  2. Pulmonary alveoli
  3. Terminal bronchioles
  4. Pleural recesses
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Correct answer: Pulmonary vessels

The hilum contains bronchi, pulmonary arteries, pulmonary veins, lymphatics, and nerves. These structures enter and exit the lung at the hilum.

Difficulty: Medium Question 17 of 20

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