Certain anatomical peculiarities of the child's lung deserve attention before entering upon a description of the acute affections to which it is most frequently subject. These peculiarities are of embryonic type, and are present to a greater or less extent up to the fifth year. In the fœtus the bronchial tubes are relatively large, while the alveoli are mere bud-like dilatations, "as if Nature had laid out a bronchial tree of generous proportions at the outset, to meet the demands of new-born existence and allow for its subsequent growth." The connective tissue in the fœtal lung is everywhere a delicate meshwork, but loosely retaining the bloodvessels, tending to abundant cell-proliferation, and occupying a far greater relative space than in the adult,—the air vesicles and intervening connective tissue being about equal in extent. The lining membrane of the bronchial tubes, with its rich net work of capillaries, is but loosely bound
DODGE CL. ACUTE BRONCHITIS IN CHILDREN. Read in the Section of Diseases of Children, at the Forty-third annual meeting of the American Medical Association, held at Detroit. Mich., June, 1892. JAMA. 1892;XIX(25):715–718. doi:10.1001/jama.1892.02420250009001b
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