Which of the following statements is true of the pulmonary pressures? An increas
ID: 3513065 • Letter: W
Question
Which of the following statements is true of the pulmonary pressures?
An increase in transpulmonary pressure creates a larger collapsing pressure across the lungs, which is accompanied by the contraction of the lungs (alveoli).
Because of pneumothorax, intrapleural pressure equilibrates with atmospheric pressure. Without the positive force of alveolar pressure pushing the lung outward, the lung collapses due to elastic recoil forces.
An increase in transpulmonary pressure creates a larger collapsing pressure across the lungs, which is accompanied by the contraction of the lungs (alveoli).
The difference between intra-alveolar pressure and atmospheric pressure is the pressure gradient that drives ventilation.Because of pneumothorax, intrapleural pressure equilibrates with atmospheric pressure. Without the positive force of alveolar pressure pushing the lung outward, the lung collapses due to elastic recoil forces.
Intrapleural pressure is always positive so that the pleural membranes remain in contact.Explanation / Answer
Ans.
The difference between intra-alveolar pressure and atmospheric pressure is the pressure gradient that drives ventilation.
This statement is TRUE for Pulmonary Pressure.
In atmosphere pO2 is more than pO2 of alveoli due to which oxygen enters the alveoli. Where as in alveoli pCO2 is more than pCO2 of atmosphere, due to which carbon dioxide moves out from alveoli to atmosphere. This all happens because of pressure gradient. The flow is from region of high pressure gradient to region of low pressure gradient.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.