chapter  3
38 Pages

Respiratory physiology

As the lung parenchyma consists of interconnected alveolar walls and interstitial tissues, the surrounding tissues oppose any local distortion of alveoli. erefore, when a small area of alveoli begins to collapse the surrounding tissue is stretched and tends to pull the alveoli back open. is phenomenon called alveolar interdependence, along with surfactant and collateral ventilation via the pores of Kohn, prevents alveolar collapse. e airways and alveoli distal to a single terminal bronchiole make up a functional unit: the pulmonary lobule.