Fig 12. Lung (NO-6-b)
A typical bronchiole is shown here. Blood vessels (BV) are
adjacent to the bronchiole. The main features of the
bronchiolar wall evident in the figure are bundles of smooth
muscle (M) and the lining epithelium. The connective tissue is
minimal and, at this low magnification, not conspicuous.
Nevertheless, the connective tissue is present and separates
the muscle into bundles. The connective tissue contains
collagenous fibers (CF). Glands are not present in the wall of
the bronchiole. Surrounding the bronchiole, are the air spaces
or alveoli (A) of the lung.