MICROANATOMY

Detailed explanation-1: -Bronchial smooth muscle contraction induces airway narrowing. The smooth muscle also contributes to bronchial inflammation by secreting a range of inflammatory mediators, recruiting and activating inflammatory cells, such as mast cells or T-lymphocytes.

Detailed explanation-2: -Smooth muscle is found throughout the body where it serves a variety of functions. It is in the stomach and intestines where it helps with digestion and nutrient collection. It is found throughout the urinary system where it functions to help rid the body of toxins and works in electrolyte balance.

Detailed explanation-3: -Respiratory System The bronchioles are lined by simple cuboidal ciliated epithelium, have no hyaline cartilage or submucosal glands, and are surrounded by elastic fibers and smooth muscle.

Detailed explanation-4: -The bronchioles are lined by simple columnar to the cuboidal epithelium, and the alveoli possess a lining of thin squamous epithelium that allows for gas exchange.