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The following story illustrates the development of a high altitude illness. You fly from Vancouver to Denver at 1,525 meters. That afternoon you rent a car and drive up to the trailhead at 2,438 m. You hike up to your first camp at 2,745 m. The next day you hike up to 3,048 m. You begin to have a severe headache and feel nauseous and weak. If your condition worsens, you may begin to have difficulty hiking. What causes altitude sickness? The concentration of oxygen at sea level is about 21% and the barometric pressure averages 760 mmHg. As altitude increases, the concentration remains the same but the number of oxygen molecules per breath is reduced. At 3,658 m the harometric pressure is only 483 mmHg so there are

The following story illustrates the development of a high altitude illness. You fly from Vancouver to Denver at 1,525 meters. That afternoon you rent a car and drive up to the trailhead at 2,438 m. You hike up to your first camp at 2,745 m. The next day you hike up to 3,048 m. You begin to have a severe headache and feel nauseous and weak. If your condition worsens, you may begin to have difficulty hiking. What causes altitude sickness? The concentration of oxygen at sea level is about 21% and the barometric pressure averages 760 mmHg. As altitude increases, the concentration remains the same but the number of oxygen molecules per breath is reduced. At 3,658 m the harometric pressure is only 483 mmHg so there are

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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High Altitude Sickness The following story illustrates the development of a high altitude illness. You fly from Vancouver to Denver at 1,525 meters. That afternoon you rent a car and drive up to the trailhead at 2,438 m. You hike up to your first camp at 2,745 m. The next day you hike up to 3,048 m. You begin to have a severe headache and feel nauseous and weak. If your condition worsens, you may begin to have difficulty hiking. What causes altitude sickness? The concentration of oxygen at sea level is about 21% and the barometric pressure averages 760 mmHg. As altitude increases, the concentration remains the same but the number of oxygen molecules per breath is reduced. At 3,658 m the barometric pressure is only 483 mmHg, so there are roughly 40% fewer oxygen molecules per breath. Source: http://www.princeton.edu/~oa/safety/altitude.shtml Which of the following explains the problem with oxygen levels at high altitude? Select one: a. Active transport of O₂ is with the concentration gradient b. Oxygen diffuses from an area high pressure to an area of low pressure c. An increase in air pressure accompanies an increase in altitude d. Carbon dioxide levels are higher than oxygen levels at high altitude
Transcribed Image Text:High Altitude Sickness The following story illustrates the development of a high altitude illness. You fly from Vancouver to Denver at 1,525 meters. That afternoon you rent a car and drive up to the trailhead at 2,438 m. You hike up to your first camp at 2,745 m. The next day you hike up to 3,048 m. You begin to have a severe headache and feel nauseous and weak. If your condition worsens, you may begin to have difficulty hiking. What causes altitude sickness? The concentration of oxygen at sea level is about 21% and the barometric pressure averages 760 mmHg. As altitude increases, the concentration remains the same but the number of oxygen molecules per breath is reduced. At 3,658 m the barometric pressure is only 483 mmHg, so there are roughly 40% fewer oxygen molecules per breath. Source: http://www.princeton.edu/~oa/safety/altitude.shtml Which of the following explains the problem with oxygen levels at high altitude? Select one: a. Active transport of O₂ is with the concentration gradient b. Oxygen diffuses from an area high pressure to an area of low pressure c. An increase in air pressure accompanies an increase in altitude d. Carbon dioxide levels are higher than oxygen levels at high altitude
Which blood vessel contains blood with the lowest concentration of carbon dioxide? Select one: a. coronary artery b. aorta c. superior vena cava d. pulmonary vein O O O
Transcribed Image Text:Which blood vessel contains blood with the lowest concentration of carbon dioxide? Select one: a. coronary artery b. aorta c. superior vena cava d. pulmonary vein O O O
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