What is the partial pressure of oxygen in the lung given the following conditions? Percentage of oxygen in air: 20 Barometric pressure: 700 mm Hg
a. 111 mm Hg
b. 124 mm Hg
c. 131 mm Hg
d. 140 mm Hg
ANS: D
The partial pressure of oxygen is equal to the percentage of oxygen in the air, 20, times the total pressure (700 mm Hg), or 140 mm Hg (700 ? 0.20 = 140).
You might also like to view...
Which of the following is correctly punctuated?
What will be an ideal response?
________ An office manager can often gain a great deal of loyalty from his or her employees through empathy
Indicate whether the statement is true or false
What main purpose was served by an almshouse in the preindustrial period?
a. It was used to quarantine people who had contracted a contagious disease. b. It provided free medical care and drugs to ambulatory patients. c. It specialized in performing basic surgeries. d. It performed general welfare and custodial functions.
Choose the best match for each item. Use an answer only once.
A. reticulocyte stain
B. reticulocyte percentage 
patient's RBC count
C. inadequate mixing of the blood can be a source of error
D. number of reticulocytes divided by the number of red cells counted
E.
F.