which one of the following is a metabolic function of lung ?
Phonation
Gas exchange
Engulfing foreign bodies
Converting Angiotensin l to Angiotensin ll
External respiration occurs between
blood and terminal bronchiols
alveoli and blood
nose and external enviroment
systemic capillaries and tissues
Surfactant is important for
increasing surface tension
increasing airway resistance
prevent alveolar collapse
causes respiratory distress syndrome
