What is Bronchiole?
{{Infobox anatomy | Name = Bronchiole | Image = Alveoli diagram.png | Caption = Diagram of the [[alveoli]] with both cross-section and external view. | Image2 = | Caption2 = | System = [[Respiratory system]] | Precursor = }} The '''bronchioles''' or '''bronchioli''' are a part of the [[lung]]. They are the first [[airway]] branches that no longer have [[cartilage]]. They are branches of the [[bronchi]]. The bronchioles end by entering the circular sacs called [[alveolus|alveoli]]. {{biology-stub}} [[Category:Anatomy of the respiratory system]]