Multiple choice

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

  1. apex

  2. hilum

  3. mediastinum

  4. trachea

  5. base

Reveal answer Fill a bubble to check yourself
B 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.