What extent do you agree or disagree with the statement, \"Our lungs use energy
ID: 85171 • Letter: W
Question
What extent do you agree or disagree with the statement, "Our lungs use energy to pump oxygen into our blood and pump carbon dioxide out of our blood." Explain why you agree or disagree with this statement by describing how gases are moved between our blood and the air around us. Evan has emphysema, which causes his lungs to be overextended and makes it difficult for him to exhale completely. He often feels fatigued from working so hard to empty his lungs of air. Which muscles in Evan's body are probably working harder than normal when Evan breathes? Marcie sustained a brain stem injury that reduced the function of her ventral respiratory group (VRG) in her medulla oblongata. How do you think this will impact Marcie's breathing patterns and blood pH?Explanation / Answer
No, Lungs exchange gases based on Partial pressure of O2 and Co2 present in Lungs and Atmosphere.
Partial pressure of O2 in Atmosphere = 159mmHg and Partial pressure of O2 in Alveoli = 104mmHg
So, Air started to move from outside to inside of the lungs.
Partial pressure of O2 in Deoxygenated Blood = 4ommHg. So, from Alveoli to Blood O2 is exchange.
Same rule follows for Co2.
Partial pressure of CO2 in Deoxygenated Blood = 45mmHg and Partial pressure of CO2 in Alveoli = 40mmHg
So, Co2 moved from blood to Alveoli
Partial pressure of CO2 in Atmosphere = 0.3mmHg. From Alveoli Co2 moved to Atmosphere.
2. Emphysema - alveolar walls are damaged due to which respiratory surface is decreased. So the air are get trapped in the alveoli it makes difficult during exhalation of air.
It destroy the spongy tissue in the lungs so it lost the elastic nature of lungs it cant able to relax or empty the air.
3. VRG - These neurons makes abdominal muscles to help with exhalation during heavy breathing. Only during heavy excersice or heavy work this center will be active and increase the exhale process. Due that time it makes severe problem to Marcie.
Blood pH converted into acidic due to CO2 accumulation in the blood.
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