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Exam-BIPN 102 Midterm 2; Questions and Answers Rated A+ $11.99   Add to cart

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Exam-BIPN 102 Midterm 2; Questions and Answers Rated A+

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Exam-BIPN 102 Midterm 2; Questions and Answers Rated A+

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  • September 11, 2024
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Exam-BIPN 102 Midterm 2; Questions and Answers
Rated A+
dalton's law Correct Ans-Pair = Po2 + Pn2 + Pco2 + Par




henry's law Correct Ans-C = alphaP


the concentration/amount of a dissolved gas is a function of the gas's Pp and solubility

coefficient




partial pressure calculation Correct Ans-Pgas = Fgas * Patm




inspired partial pressure Correct Ans-Pi,o2 = Fo2 * (Patm - Ph2o)


air conditioning during inhalation: adds warmth and moisture to the gas --> water gets

evaporated in the mucosa, generating a water pressure which decreases the atmospheric

pressure


at 37C, Ph2o= 47 mmHg




alveolar partial pressure Correct Ans-PA = Pi,o2 - Po2 = 150 mmHg - 50 mmHg = 100 mmHg


Pi,o2 = Fo2 * (Patm-Ph2o) = .21(760-47) = 150 mmHg


Po2 = Pa,co2/RQ = 40 mmHg/0.8 = 50 mmHg

, Exam-BIPN 102 Midterm 2; Questions and Answers
Rated A+

how much oxygen is diffusing out of the alveoli




fick's equation Correct Ans-V = ((PA-Pb)*A*D/)T OR V/A = ((PA-Pb)*D/)T


V = flow rate


PA-Pb = pressure gradient


A = surface area


D = diffusion coefficient


T = thickness/distance


V/A = net rate of particles moving through A; flux


(PA-Pb)/T = change in P over a distance


D*A/T = diffusion capacity, D(L)




fibrosis and fick's equation Correct Ans-smoke cannot be destroyed by macrophages -->

production of collagen --> collagen/scar tissue on the alveoli --> increase in T --> decrease in

gas exchange

, Exam-BIPN 102 Midterm 2; Questions and Answers
Rated A+
emphysema and fick's equation Correct Ans-airway obstruction as a result of inorganic

particles --> triggers the production of elastase which breaks down elastin --> alveoli lose

elastance --> alveoli recoil --> increase in T and decrease in A --> lower gas exchange




edema and fick's equation Correct Ans-swelling and increased fluid in the interstitial space

--> increase in T (greater diffusion distance) --> decrease in gas exchange




asthma and fick's equation Correct Ans-hyper responsiveness/sensitivity of the airways -->

airway obstruction, swelling, mucus, etc --> increase in T --> decrease in gas exchange




diffusion limited gas exchange Correct Ans-- gas exchange is limited by the diffusion rate of

gas from the alveoli to the circulatory system


- the pressure in the capillaries and pressure in the alveoli never equilibrate


- net diffusion into pulmonary capillary depends on magnitude of partial pressure gradient


- this occurs with oxygen in abnormal situations




perfusion limited gas exchange Correct Ans-- gas exchange is limited by the blood flow rate

through the capillaries

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