EXERCISE PHYSIO- PLEASE HELP :)
Question 1 If lung (intrapulmonic) pressure is less than atmospheric pressure, which way does air flow?
A.into the lung
B. out of the lung
C. it is not possible for lung pressure to be less than atmospheric pressure
EXERCISE PHYSIO- PLEASE HELP :)
Question 1 If lung (intrapulmonic) pressure is less than atmospheric pressure, which way does air flow?
A.into the lung
B. out of the lung
C. it is not possible for lung pressure to be less than atmospheric pressure
For unlimited access to Homework Help, a Homework+ subscription is required.
Related textbook solutions
Related questions
EPIDEMIOLOGY: Please answer these questions, no guess work , thanks
QUESTION 1
The death rate per 100,000 for lung cancer is 7 among non-smokers and 71 among smokers. The death rate per 100,000 for coronary thrombosis is 422 among non-smokers and 599 among smokers. The prevalence of smoking in the population is 55%.
The population etiologic fraction of disease due to smoking is:
0.83 for lung cancer and 0.18 for coronary thrombosis. | ||
Cannot be determined from the information provided. | ||
0.80 for lung cancer and 0.28 for coronary thrombosis. | ||
0.83 for lung cancer and 0.28 for coronary thrombosis. | ||
0.80 for lung cancer and 0.18 for coronary thrombosis. |
QUESTION 2
SAMPLE 2 BY 2 TABLE | |||
Outcome | Total | ||
Factor | + | â | |
+ | A | B | A + B |
â | C | D | C + D |
Total | A + C | B + D | A + B + C + D |
Assuming that the sample table is for a cohort study, define the risk difference or attributable risk.
(A/A+C) / (B/B+D) | ||
(A/A+B) / (C/C+D) | ||
(A/A+C) â (B/B+D) | ||
(A/A+B) - (C/C+D) | ||
None of the above |
0.5 points
QUESTION 3
The death rate per 100,000 for lung cancer is 7 among non-smokers and 71 among smokers. The death rate per 100,000 for coronary thrombosis is 422 among non-smokers and 599 among smokers. The prevalence of smoking in the population is 55%.
Among smokers, the etiologic fraction of disease due to smoking is:
0.90 for lung cancer and 0.29 for coronary thrombosis. | ||
0.89 for lung cancer and 0.29 for coronary thrombosis. | ||
Cannot be determined from the information provided. | ||
0.90 for lung cancer and 0.88 for coronary thrombosis. | ||
0.89 for lung cancer and 0.88 for coronary thrombosis. |