Question

I Need help with 33 and 34

32. A patient is rushed to the hospital with a gunshot wound to the chest. Upon arrival, doctors discover that the patient is suffering from a collapsed right lung. Explain why the lung collapsed when the bullet penetrated the patient's thoracic cavity. 33. Opening a can of carbonated soda leads to the loss of "fizz" over time. Describe why this occurs, and relate this phenomenon to alveolar gas exchange. 34. When a person is hyperventilating, a home remedy is to have the person breathe deeply into and out of a paper bag. Describe how this treatment" may be beneficial in regulating blood pH and respiratory rate.

Answer 1

Ans 33

As it is known that gases flow from areas of higher pressure to areas of low pressure.

In case of carbonated soda can

The atmospheric pressure of gases is higher outside the carbonated can as compared to pressure inside it. This will make the co2 gas be pushed outside the bottle ( loss of fizz) when it’s opened making the fizzle effect stop. It’s almost similar to the respiratory process inside the body.

In alveolar gas exchange

Because gasses flow from areas of high pressure to areas of low pressure, atmospheric air has higher partial pressure of oxygen than alveolar air (PO2= 159mm Hg compared to PAO2= 100mm Hg).

Similarly, atmospheric air has a much lower partial pressure for carbon dioxide compared to alveolar air (PCO2= .3mm Hg compared to PACO2= 40mm Hg). These pressure differences explain why oxygen flows into the alveoli and why carbon dioxide flows out of the alveoli through passive diffusion (just as a similar process explains alveolar and arterial gas exchange).

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