<prompt> Clara cells are found in :TracheaBronchiolesAlveoliOesophagus  <response>: Ans. is b i.e. Bronchioles Different parts of the respiratory tracts have distinctive histological features :Clara cells are found in-bronchiolesGoblet cells are found in-BronchiMucous gland are found in-BronchiNeuroendocrine cells-BronchiMural cartilage-BronchiPart rich in secretory immuno globin-BronchiolesPores of Kahn-AlveoliContain macrophages in their lumens-AlveoliNote that Squamous cells are never present in the normal lung, when found they represent a metaplasia, Squamous cell Ca is the most common type of lungs cancer even though the normal lungs contain no squamous mucosa. 