The Negative Pressure Gradient That Contributes to the Respiratory Cycle

question 55

Multiple Choice

The negative pressure gradient that contributes to the respiratory cycle ____. ​

• A)occurs only during expiration
• B)exists in the pleural cavity
• C)means that the inside of the lungs has a greater pressure pleural sac
• D)keeps the lungs separated from the chest wall
• E)is known as a pneumothorax ​

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