What most influence the resistance? - ANS RADIUS OR DIAMETER!
At which generation do airways lose all cartilage? - ANS At the level of the
bronchioles, airways lose all cartilage which is generation >16.
, What effect does the increasing division of airways have on airflow resistance? -
ANS As division of airways increases, resistance to flow decreases due to increased
cross sectional area of the airways.
what are the 3 type of alveolar cells? - ANS - squamous epithelial cells
- Type II alveolar cells
- Alveolar macrophages
what are the functions of the squamous epithelial cells? - ANS Thin cells that
allows effortless movement of gases
what are the functions of the Type II alveolar cells? - ANS Produce surfactant;
reduce surface tension so that it can easily expand
what are the functions of the alveolar macrophages? - ANS Phagocytize foreign
material entering the alveolus
Functional assessment of the respiratory system should include evaluation of
which three functions? - ANS i. Respiratory mechanics (how they move air)
ii. Gas exchange (how effective of the lungs at exchanging gas)
iii. Cardiopulmonary interaction (how effective of the heart and moving the blood)
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