Think about gas exchange at the respiratory surface. The partial pressure of oxygen (PO2) in the blood entering the respiratory surface is than the PO2 of the alveolar air and the PCO2 in the blood is higher; lower lower; higher lower; lower the same as ; higher than the PCO2 of the alveolar air.
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- If a person takes a deep breath and holds it with the mouth and nose closed, what is the pressure of gases within the alveoli relative to atmospheric pressure? O Less than atmospheric pressure Greater than atmospheric pressure O Equal to atmospheric pressure O Cannot be determined without more informationHow does a nonrebreathing mask work? A one-way valve located between the reservoir bag and the base of the mask allows gas from the reservoir bag to enter the mask on inhalation but prevents gas in the mask from flowing back into the reservoir bag during exhalation. O It has a reservoir bag that must remain inflated during both inspiration and expiration. The nurse adjusts the oxygen flow to ensure that the bag does not collapse during inhalation. The mask is constructed in a way that allows a constant flow of room air blended with a fixed flow of oxygen. Excess gas leaves the mask through the two exhalation ports, carrying with it the exhaled carbon dioxide.During expiration O The atmospheric pressure decreases O The alveolar pressure decreases O The atmospheric pressure increases O The alveolar pressure increases The intrapleural pressure decreases
- With age, lung function becomes less efficientWhen alveolar ventilation exceeds the needs of cellular respiration there is a/an OA. increase in the hydrogen ion OB. increase in the carbon dioxide C. decrease in the carbon dioxide O D. decrease in the oxygen O E. None of the above concentration in the blood.What would happen if the pressure in the pleural space (the space between the visceral and parietal pleura where the pleural fluid is located) 1 P were to increase? the pleura would no longer be able to prevent friction during breathing expiration would take longer than normal it would make expiration more difficult the lung would potentially collapse
- How does smoking cigarettes affect the anatomy of the lungs? It disrupts mucociliary and macrophage activity. It increases the body's immune response to pathogens. O It increases the surface area available for gas exchange. It causes increased permeability of the alveolar tissue.151. Vital capacity is defined as the: Group of answer choices maximum volume of air that can be moved into and out of the lungs during forced respiration. volume of air that can be forcibly exhaled after a normal inspiration. volume of air that can be forcibly exhaled at the end of a normal expiration. total volume of air contained in the respiratory passages.What are the steps of gas exchange explain in detail? Start at oxygen enter blood then oxygen enters the nostrials and is filter by nasal hair complete the rest of the steps.