Cardiopulmonary Anatomy & Physiology
7th Edition
ISBN: 9781337794909
Author: Des Jardins, Terry.
Publisher: Cengage Learning,
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Textbook Question
Chapter 18, Problem 10RQ
During exercise, the
A. 10 percent
B. 20 percent
C. 30 percent
D. 40 percent
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During exercise, the P(A 2 a)O2 begins to increase when the oxygen consumption reaches about what percent of its maximum?A. 10 percentB. 20 percentC. 30 percentD. 40 percent
During exercise, the oxygen consumption (V(o2)) of the skeletal muscles may account for more than A. 65 percent of the total V(o2) B. 75 percent of the total V(o2)C. 85 percent of the total V(o2)D. 95 percent of the total V(o2)
Stephania measured the volume of air breathed in and out of her lungs while she was training
a. During exercise, Stephania breathed more air in and out of her lungs than before exercise.How much MORE air did she breathe in with each breath during exercise? ________________________________________________________________________________b. Explain why Stephania needed to breathe in more air during exercise. ________________________________________________________________________________c. As Stephania exercised, the volume of air breathed in and out increased. Name ONE other wayhow Stephania’s breathing changed during exercise. ________________________________________________________________________________e. Explain how the breathing system is adapted to provide the lungs with clean air. ________________________________________________________________________________f. Describe the role of the rib cage during breathing in.…
Chapter 18 Solutions
Cardiopulmonary Anatomy & Physiology
Ch. 18 - Prob. 1RQCh. 18 - 2. The maximum alveolar ventilation generated...Ch. 18 - 3. During heavy exercise, the total cardiac output...Ch. 18 - Prob. 4RQCh. 18 - Prob. 5RQCh. 18 - Prob. 6RQCh. 18 - During exercise, the oxygen consumption (VO2) of...Ch. 18 - During very heavy exercise, the 1. pH increases 2....Ch. 18 - 9. During maximum exercise, the oxygen diffusion...Ch. 18 - During exercise, the P(A=a)O2 begins to increase...
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- Graph the change in oxygen uptake during recovery from exercise. Label the excess post-exercise oxygen consumption (EPOC) (i.e., oxygen debt).arrow_forwardWhen determining Resting Respiration Rate, you should a) Watch and count the number of times the chest raises and falls. b) Count each time the chest raises and falls over a minute. c) Not let the person know you are counting their breathing rate. d) All of the above are correct.arrow_forwardUnder certain circumstances, the respiratory quotient (RQ value) for an athlete exercising intensely can rise above 1. How is this possible?arrow_forward
- The below graph shows both ventilation and blood lactate concentration as a function of total oxygen consumption during a bout of exercise. Explain the relationship between these two variables and why these two measures (ventilatory threshold and lactate threshold) tend to occur around the same level of exercise intensity.arrow_forwardExplain how carbon monoxide can influence V ̇O2 max and endurance performance.arrow_forwardC18H36O2(s) + 26O2(g) → 18CO2(g) + 18H2O(l) a) Compute the RER b) Determine the rate of energy expenditure at rest (RMR) if the rate of oxygen consumption 1.25 liter/minute. c) How much energy will be burned if the exercise will proceed for 1 hour?arrow_forward
- What produces the main driving force which drives quiet expiration? A. contraction of the diaphragm. B. Gravity C. Elasticity of the diaphragm muscle.arrow_forwardA patient who breathes very slowly when wearing a low Flow of oxygen device would have: A. An increased concentration of oxygen in the lungs B. A decreased concentration of oxygen in the lungs C. There is no effect on oxygen concentration in the lungs D. There is a minimal if no effect on oxygen concentration in the lungsarrow_forwardAs oxygen consumption and cardiac output increase during exercise, the pulmonary diastolic pressure ________. a) increases b) decreases c) remains the samearrow_forward
- Which of the following statements about the oxygen-binding curves is FALSE? Select one: a. During normal activity (not exercising) the blood PO2 rarely falls below 40 mmHg. b. The PO2 and hemoglobin dissociation curve for myoglobin is to the left of fetal hemoglobin. c. The blood returning to the lungs is still 75% saturated with oxygen. d. A larger decrease in PO2 is needed for hemoglobin to drop from 100% to 75% O2 capacity than from 75% to 50% O2 capacity. e. During high metabolic activity the PO2 and hemoglobin dissociation curve would be expected to shift to the left of normal.arrow_forwardYour exercise assessment determined the Max VO 2 to be 10-METs which is an oxygen consumption of approximately ? 10 ml . kg -1 . min -1. ? 30 ml . kg -1 . min -1. ? 35 ml . kg -1 . min -1. ? 40 ml . kg -1 . min -1.arrow_forwardExplain the physiological mechanisms which cause Bertha respiratory rate to change during exercise Cues vital signs before exercise: Rr 14bpm Sp02 98%, BP 130/70,Hr 74 After exercise Rr 20bpm, HR 90,BP 140bpmarrow_forward
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