Cardiopulmonary Anatomy & Physiology
7th Edition
ISBN: 9781337794909
Author: Des Jardins, Terry.
Publisher: Cengage Learning,
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Chapter 19, Problem 2RQ
The oxygen diffusion capacity of high-altitude natives is about
A. 5-10 percent greater than predicted
B. 10-15 percent greater than predicted
C. 15-20 percent greater than predicted
D. 20-25 percent greater than predicted
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A. The affinity of oxygen to hemoglobin in Baguio City
B. The affinity of oxygen to hemoglobin at sea level
O A. The FIRST quantity is the larger of the 2.
O B. The SECOND quantity is the larger of the 2.
O C. The two quantities are EQUAL in size
A. The rate at which O2 detaches from hemoglobin when temperature is high
B. The rate at which O2 detaches from hemoglobin when temperature is low
O A. The FIRST quantity is the larger of the 2.
O B. The SECOND quantity is the larger of the 2.
C. The two quantities are EQUAL in size
Q). The presence of hemoglobin in normal arterial blood increases its oxygen concentration
approximately how many times?
A. 10
B. 30
C. 50
D. 70
E. 90
Answer: D. Normal arterial blood has a Po2 of about 100 mm Hg. The concentration of oxygen
in the absence of hemoglobin is the dissolved oxygen, which is 100 × 0.003, or 0.3 ml 02.100
ml-1 blood. However, normal arterial blood contains about 15 g.100 ml-1 of hemo- globin, and
each gram can combine with 1.39 ml O2. Since the oxygen saturation of normal arterial blood is
about 97%, the total oxygen con- centration is given by (1.39 × 15 × 97/100) + 0.3 ml 02.100
ml-1 blood. This is about 20.5 as opposed to the dissolved oxygen concentration
of 0.3 ml 02.100 ml-1 blood. Therefore, the presence of hemoglobin increases the oxygen
concentration about 70 times.
Which of the following is (are) true of oxygen toxicity?
I. Free radicals are produced in an abundance, leading to cell damage and death
II. Can result in physiologic shunting
III. Can be avoided by limiting 02 exposure to < 70% concentration at all times
IV. Is marked by an increased in neutrophils and macrophages, common immune responses
A. I, II, III
B. I, II and IV
C. I, II, III and IV
Chapter 19 Solutions
Cardiopulmonary Anatomy & Physiology
Ch. 19 - The barometric pressure is about half the...Ch. 19 - 2. The oxygen diffusion capacity of high-altitude...Ch. 19 - Prob. 3RQCh. 19 - Prob. 4RQCh. 19 - Prob. 5RQCh. 19 - At high altitude, the True _______ False ________...Ch. 19 - 7. In individuals who True ___________ False...Ch. 19 - 8. There is a linear True_______ False...Ch. 19 - 9. Natives who have been True ________...Ch. 19 - 10. The concentration of True _______ False...
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