ANATOMY

Detailed explanation-1: -In your lungs, the main airways, called bronchi, branch off into smaller and smaller passageways. The smallest airways, called bronchioles, lead to tiny air sacs called alveoli.

Detailed explanation-2: -(BRONG-kee-ole) A tiny branch of air tubes in the lungs. Enlarge.

Detailed explanation-3: -The trachea divides into the two main BRONCHI (tubes), one for each lung. The bronchi, in turn, subdivide further into bronchioles. The RIGHT LUNG is divided into three LOBES, or sections.

Detailed explanation-4: -Your bronchioles are some of the smallest airways in your lungs. Inhaled air passes through tiny ducts from the bronchioles into elastic air sacs (alveoli). The alveoli are surrounded by the alveolar-capillary membrane, which normally prevents liquid in the capillaries from entering the air sacs.

Detailed explanation-5: -After the tertiary segmental bronchi, the airways continue to fan out into bronchioles. Bronchioles then divide into three types: conducting, terminal, and respiratory.