EBK BIOLOGY
6th Edition
ISBN: 9780134819075
Author: Maier
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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Textbook Question
Chapter 20, Problem 1AAATB
Some endurance athletes, such as cyclists, engage in the practice of “blood doping,” in which packed red blood cells are transfused into their bloodstream immediately before an event. How might increasing the volume of red blood cells provide an advantage to an athlete? What do you think could be the risks of this practice?
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Professional cycling has had much difficulty with cheating. Athletes and team doctors have discovered a variety of unnatural and illegal ways to improve sport performance. Cycling is highly aerobic
which means oxygen is required to produce energy. If you have more red blood cells, you can carry more oxygen to working muscles. There are two methods of illegal blood doping to increase the
number of red blood cells.
1. A few weeks before competition you would have some blood removed into a into a bag like when people give blood. You freeze the blood. Your body will pretty quickly replace the blood to normal
levels. Before the race, you thaw and re infuse the blood. Now you (the athlete) have more than normal amounts of red blood cells. You can now carry more oxygen to yoru working muscles and have
an unfair advantage.
2. You can also inject a hormone called erythropoetin (EPO) to stimulate the bone marrow to make more red blood cells.
What two physiological systems are involved in method…
Endurance athletes sometimes try an illegal method of blood doping called autologous transfusion. Some blood from the athlete is removed well before competition, and then transfused back into the athlete just before competition. (a) Why might blood transfusion benefit the athlete? (b) With time, stored red blood cells become depleted in 2,3-BPG. What might be the consequences of using such blood for a blood transfusion?
Watch this video (http://openstaxcollege.org/l/doping)to see doctors discuss the dangers of blood doping in sports.What are the some potential side effects of blood doping?
Chapter 20 Solutions
EBK BIOLOGY
Ch. 20 - Describe how contraction of the diaphragm allows...Ch. 20 - Prob. 2LTBCh. 20 - Alveoli are ___________. small air sacs at the...Ch. 20 - Prob. 4LTBCh. 20 - Prob. 5LTBCh. 20 - Prob. 6LTBCh. 20 - Prob. 7LTBCh. 20 - Prob. 8LTBCh. 20 - Heart attacks ___________. are typically caused by...Ch. 20 - Prob. 10LTB
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- when we use interventions to lessen the symptoms of inflammation, such as ice for swelling, and antipyretics for fever, wouldn't that slow the healing process? For instance, ice reduces swelling through vasoconstriction, however, the site of injury requires increased blood flow for tissue repair. Therefore, vasoconstriction would halt the healing process and prolong injury. Would it be more advantageous then to let our bodies do their job and just deal with the symptoms?arrow_forwardYou are watching track and field competition at the Olympics. The announcer mentions that the whole team from one of the countries was disqualified because they were using blood doping. You friends who watched TV with you ask you what “blood doping” is. Explain biological principles behind two types of blood doping and possible side effects of these procedures. Give your opinion if blood doping should or should not be considered “natural” and allowed in competitive sports.arrow_forwardAs an undergraduate intern in psychiatric unit a patient requesting therapeutic marijuana asks you why his physician has recommended a close monitoring of blood cell components. Remembering you took notes on this in one of your neuroscience lectures, you respond that is because marijuana can affect not only cells in the brain but also brain blood circulation lymphocyte count in the blood erythrocyte count in the blood cells in the bone marrowarrow_forward
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