smooth muscle tissue of lobular bronchiole

Smooth muscle tissue of the lobular bronchiole is the muscular component in the wall of a lobular bronchiole that maintains bronchiolar tone.

Located in the wall of lobular bronchioles, arranged in scattered smooth muscle fibers around the bronchiolar circumference.

The smooth muscle maintains bronchiolar patency, responds to bronchoconstrictor and bronchodilator signals, and helps regulate air distribution.

The smooth muscle is innervated by autonomic nervous system fibers and responds to circulating mediators like histamine and epinephrine.

Bronchiolar smooth muscle constriction contributes to airway obstruction in asthma and COPD; beta-agonists target this tissue therapeutically.