BIOLOGY:CONCEPTS+..W/ACCESS+LM
4th Edition
ISBN: 9781260715804
Author: Hoefnagels
Publisher: MCG
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Chapter 31, Problem 19WIO
Summary Introduction
To describe:
The reasons for the times of endurance events at
Concept introduction:
The effect of high altitude on the environment is low levels of atmospheric oxygen, temperature, humidity and pressure with intense sunshine and cosmic radiations.
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The concentration of O2 in the atmosphere declines with increasingelevation. Why do you think the times of endurance events at the1968 Olympics, held in Mexico City (elevation: 2200 m), wererelatively slow?
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Why does altitude have almost no effect on an animal’s ability to rid itself of CO2 through gas exchange?
Chapter 31 Solutions
BIOLOGY:CONCEPTS+..W/ACCESS+LM
Ch. 31.1 - Prob. 1MCCh. 31.1 - Prob. 2MCCh. 31.1 - Differentiate between aerobic cellular...Ch. 31.1 - An earthworm prefers moist soil. Why does this...Ch. 31.1 - Prob. 5MCCh. 31.2 - Prob. 1MCCh. 31.2 - Prob. 2MCCh. 31.2 - Which structure prevents swallowed food from...Ch. 31.2 - Describe the relationships among the trachea,...Ch. 31.3 - What is the relationship between the volume of the...
Ch. 31.3 - Prob. 2MCCh. 31.3 - Prob. 3MCCh. 31.4 - Prob. 1MCCh. 31.4 - Prob. 2MCCh. 31.4 - Prob. 3MCCh. 31.4 - Prob. 4MCCh. 31.5 - Prob. 1MCCh. 31.5 - Prob. 2MCCh. 31 - Prob. 1MCQCh. 31 - Prob. 2MCQCh. 31 - Prob. 3MCQCh. 31 - Prob. 4MCQCh. 31 - Prob. 5MCQCh. 31 - Prob. 6MCQCh. 31 - Prob. 7MCQCh. 31 - Prob. 8MCQCh. 31 - Write a paragraph comparing four types of...Ch. 31 - Prob. 2WIOCh. 31 - Prob. 3WIOCh. 31 - Prob. 4WIOCh. 31 - How is air cleaned, warmed, and humidified before...Ch. 31 - Prob. 6WIOCh. 31 - Prob. 7WIOCh. 31 - Prob. 8WIOCh. 31 - Prob. 9WIOCh. 31 - Jumping into cold water may initiate the diving...Ch. 31 - Prob. 11WIOCh. 31 - How does blood transport most CO2? In what other...Ch. 31 - People who suffer from claustrophobia are afraid...Ch. 31 - Prob. 14WIOCh. 31 - Prob. 15WIOCh. 31 - Prob. 16WIOCh. 31 - Prob. 17WIOCh. 31 - Prob. 18WIOCh. 31 - Prob. 19WIOCh. 31 - How are the lungs similar to the stomata of...Ch. 31 - Prob. 1PITCh. 31 - Prob. 2PITCh. 31 - 3. Add terms to the concept map to explain the...
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- A partial pressure gradient of oxygen exists between ________. a. air and lungs b. lungs and metabolically active tissues c. air at sea level and air at high altitudes d. all of the abovearrow_forwardWhy does your breathing rate increase when you exercise? What happens to your heart rate at the same timeand why?arrow_forwardGas moves from an area of ________ partial pressure to an area of ________ partial pressure. low; high low; low high; high high; lowarrow_forward
- Underwater, we humans cant compete with whales and other air-breathing marine mammals, which can stay submerged for extended periods. At the beach one day you meet a surfer who tells you that special training could allow her to swim underwater without breathing for an entire hour. From what you know of respiratory physiology, explain why she is mistaken.arrow_forwardWhen you sneeze, abdominal muscles abruptly contract, pushing your diaphragm upward. Given the discussion of the respiratory cycle in Section 10.4, why does this change expel air out your nose?arrow_forwardDuring strenuous exercise, the oxygen-hemoglobin dissociation curve shifts to the right. This rightward shift reflects an increase in the affinity of hemoglobin for oxygen and favors loading of O2 onto hemoglobin in the lungsarrow_forward
- How does the concept of partial pressure explain the diffusion of oxygen into our blood stream? Why does this become more difficult at high altitudes?arrow_forwardWhen we change altitude, during the next few days, the body responds by adjusting Hb cooperativity. This can be accomplished by changing the concentration of 2,3-BPG in the blood. After moving from a low altitude to a higher altitude, does 2,3,-BPG increase or decrease? Explain how this affects oxygen transport capacityarrow_forwardHow is respiration rate in humans modulated? How are diving animals able to remain submerged for extended periods of time without suffering the effects of oxygen deprivation?arrow_forward
- After spending a day or more at high altitude (with an oxygen partial pressure of 75 torr), the concentration of 2,3- bisphosphoglycerate (2,3-BPG) in red blood cells increases. What effect would an increased concentration of 2,3-BPG have on the oxygen-binding curve for hemoglobin? Why would this adaptation be beneficial for functioning well at high altitude?arrow_forwardAfter light exercise, the oxygen consumed in recovery is approximately equal to the oxygen deficit, which is the amount of additional oxygen that would have been consumed had oxygen consumption reached steady state immediately. How is the oxygen consumed in recovery used?arrow_forwardIn carbon monoxide (CO) poisoning, CO binds to hemoglobin, therebydecreasing the uptake of O2 by hemoglobin. In addition, when CO bindsto hemoglobin, the oxygen-hemoglobin dissociation curve shifts to theleft. How does this shift affect the ability of tissues to get O2? Explainarrow_forward
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