Explain how increasing the chest volume will force air to flow into the lungs. I

Question

Explain how increasing the chest volume will force air to flow into the lungs. If the rubber membrane of the bell jar model lung were accidentally punctured by sharp nails, what would be the effect on the two balloons? If the chest volume decreased during an inhalation instead of increasing, what might be some reasons? What is the relationship between the components of TLC? What is the relationship between the components of VC? What are two ways for MRV to increase? Describe the damage to specific parts of the respiratory system in these disorders: a. emphysema

Explanation / Answer

8.When we inhale, there occurs contraction of diaphragm and intercostal muscles.At the same time,the chest cavity expands.This expansion of chest cavity decreases the pressure within it and this pressure is less than the outside pressure of air.As a result of this,air flows in through the airways (from high pressure to low pressure )into the lungs and and inflates it.

9.The rubber membrane of the bell jar model lung represents the diaphragm.When diaphragm contracts and relaxes, air is pushed in and out of the lungs respectively.When it is ruptured, breathing and circulation will be affected and abdominal contents could move into the chest cavity leading to a decrease in lung volume.

10.Some reasons might be that there would be improper contraction of diaphragm or intercostal muscles that in turn would not allow the chest cavity to expand.

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