Which of the Following Mechanisms Is Responsible for the Creation

question 28

Multiple Choice

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.

• A) I, II
• B) III
• C) I, II, III
• D) II, III