Question

The diameter of bronchioles varies under the control of _____ neurons, which cause the diameter to _____. the diameter of bronchioles varies under the control of _____ neurons, which cause the diameter to _____. autonomic; constrict under parasympathetic control and dilate under sympathetic control autonomic; dilate under parasympathetic control and constrict under sympathetic control parasympathetic; either increase or decrease, depending upon the type of receptor present sympathetic; either increase or decrease, depending upon the type of receptor present

Answer 1

• Autonomic neurons
• Constrict under parasympathetic control and dilate under sympathetic control

Step-by-step explanation:

Bronchioles are distal airways found in the lungs made of layers of smooth muscles. They supply the alveolar with oxygen, therefore acting as the terminal part of the respiratory system. Bronchioles are approximately 1 mm in diameter or less