In which of the following types of ventilation is alveolar expansion during inspiration due to a decrease in pleural pressure? 1. Positive-pressure ventilation (PPV) 2. Negative-pressure ventilation (NPV) 3. Spontaneous ventilation
a. 1 and 2 only
b. 1 and 3 only
c. 2 and 3 only
d. 1, 2, and 3
ANS: C
NPV decreases pleural pressure (Pp1) during inspiration by exposing the chest to sub-atmospheric pressure.
Health Professions
You might also like to view...
The generic formoterol is equivalent to:
A) Slo-Bid®. B) Flovent®. C) Tilade®. D) Foradil®.
Health Professions
The branch of the autonomic nervous system that controls vegetative functions such as digestion of food, is the:
a. Sympathetic b. Somatic c. Central d. Parasympathetic
Health Professions