Concept explainers
During exercise, the oxygen consumption
A. 65 percent of the total
B. 75 percent of the total
C. 85 percent of the total
D. 95 percent of the total
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Chapter 18 Solutions
Cardiopulmonary Anatomy & Physiology
- 9. During maximum exercise, the oxygen diffusion capacity may increase as much a A. 3-fold B. 6-fold C. 9-fold D. 12-foldarrow_forwardDuring 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 percentarrow_forwardStephania 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.…arrow_forward
- During exercise, the P(A=a)O2 begins to increase when the oxygen consumption reaches about what percent of its maximum? A. 10 percent B. 20 percent C. 30 percent D. 40 percentarrow_forwardYou are assesing a 16 year old male with a history of DUchenne's muscular dystrophy. Which of the following would be your primary concern? A) Assessing tidal volume B) Assessing respiratory rate C) Assessing for decubitus ulcers D) Assessing motor status in the extremitiesarrow_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_forward
- When 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_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_forwardAs oxygen consumption and cardiac output increase during exercise, the pulmonary diastolic pressure ________. a) increases b) decreases c) remains the samearrow_forward
- Myoglobin benefits muscle cells by ... A. binding with O2 just as strongly as hemoglobin does. B. releasing bound O2 at lower PO2 conditions than hemoglobin does. C. increasing the effectiveness of fast glycolytic muscle fibers used in short bursts. D. contributing to the elasticity of flight muscle in birds. E. using hemoglobin as a reserve source of oxygen.arrow_forwardAfter employing steady-state endurance training for 6-months, in preparation for marathon, which of the following physiological parameters would be significantly increased in the skeletal muscles of the legs at rest? a. Mitochondrial density b. CK enzyme activity c. Glycogen storage d. CPT activity e. All of the above f. Only A, C and D are correctarrow_forwardIf the transpulmonary pressure equals zero,a. a pneumothorax has probably occurred.b. the lungs cannot inflate.c. elastic recoil causes the lungs to collapse.d. all of these apply.arrow_forward
- Cardiopulmonary Anatomy & PhysiologyBiologyISBN:9781337794909Author:Des Jardins, Terry.Publisher:Cengage Learning,Basic Clinical Lab Competencies for Respiratory C...NursingISBN:9781285244662Author:WhitePublisher:Cengage