Which of the following mechanisms is responsible for the creation of the subatmospheric pressure between the lung and chest wall?
I.Both lungs and chest wall pull outward.
II.The lung has a tendency to recoil inward and pull away from the chest wall.
III.The thorax has a tendency to recoil outward, away from the lung.

Question

Quizplus · Accepted Answer

The healthy lung has a tendency to recoil inward and pull away from the chest wall. At the same time, the thorax has a tendency to recoil outward, away from the lung. These two oppositely directed recoil forces create a subatmospheric pressure between the lung and the chest wall.

Which of the Following Mechanisms Is Responsible for the Creation