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Alveolar course

The alveolar course [ductus alveolaris – PNA (The anatomic nomenclature Parisian), BNA (The anatomic nomenclature Basel), JNA (The anatomic nomenclature Yenskaya), LNH (The Leningrad histologic nomenclature)] – one of structural components of a pulmonary acinus which is continuation of a respiratory bronchiole. The alveolar course passes into alveolar sacks.

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