A layer of smooth muscle in the wall of this tiny air -conducting tube allows it to regulate its diameter.

Name: A layer of smooth muscle in the wall of this tiny air -conducting tube allows it to regulate its diameter.
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Question

Quizplus · Accepted Answer

Bronchioles are small air-conducting tubes in the lungs that have smooth muscle in their walls, allowing them to regulate their diameter for controlling airflow resistance and distribution in the lungs.

A Layer of Smooth Muscle in the Wall of This