Multiple choice

In mammals, nerves, pulmonary vessels and bronchi enter the lungs at the

  1. base

  2. trachea

  3. mediastinum

  4. hilum

  5. apex

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The hilum of the lung is a triangular part which allows the other structures forming the root of the lung to enter and exit. It permits arteries, veins, nerves, bronchi and other structures to enter and exit.