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Questions and Answers
During exercise, what has a major influence on the cardiovascular and ventilatory responses to exercise?
During exercise, what has a major influence on the cardiovascular and ventilatory responses to exercise?
- The magnitude of cellular respiration (correct)
- The distribution of cardiac output to exercising muscle
- The size of the physiological VD
- The end-capillary PO2 in the exercising muscles
What happens to AT when the cardiovascular transport of O2 is impaired during exercise?
What happens to AT when the cardiovascular transport of O2 is impaired during exercise?
- It remains constant
- It is reduced (correct)
- It is eliminated
- It is increased
What are the two powerful ventilatory stimuli produced during exercise above the AT?
What are the two powerful ventilatory stimuli produced during exercise above the AT?
- H+ and O2
- O2 and CO2
- CO2 and H+ (correct)
- CO and H2O
What is the average percentage of O2 that can be extracted from muscle blood flow during maximal exercise?
What is the average percentage of O2 that can be extracted from muscle blood flow during maximal exercise?
What determines exercise ventilation besides the changing rate of CO2 delivery to the lungs?
What determines exercise ventilation besides the changing rate of CO2 delivery to the lungs?
What is the relationship between work rate and the distribution of cardiac output to exercising muscle?
What is the relationship between work rate and the distribution of cardiac output to exercising muscle?
What is the end-capillary PO2 in the exercising muscles during maximal exercise?
What is the end-capillary PO2 in the exercising muscles during maximal exercise?
What happens to exercise endurance when exercise is performed above the AT?
What happens to exercise endurance when exercise is performed above the AT?
What is the primary factor that determines the degree of cardiovascular and ventilatory responses to exercise?
What is the primary factor that determines the degree of cardiovascular and ventilatory responses to exercise?
What is the primary role of the carotid bodies during exercise?
What is the primary role of the carotid bodies during exercise?
What happens to PaO2 during exercise?
What happens to PaO2 during exercise?
What is the relationship between exercise above the AT and CO2 production?
What is the relationship between exercise above the AT and CO2 production?
During exercise, what has a major influence on the cardiovascular and ventilatory responses to exercise?
During exercise, what has a major influence on the cardiovascular and ventilatory responses to exercise?
What happens to AT when the cardiovascular transport of O2 is impaired during exercise?
What happens to AT when the cardiovascular transport of O2 is impaired during exercise?
What are the two powerful ventilatory stimuli produced during exercise above the AT?
What are the two powerful ventilatory stimuli produced during exercise above the AT?
What is the average percentage of O2 that can be extracted from muscle blood flow during maximal exercise?
What is the average percentage of O2 that can be extracted from muscle blood flow during maximal exercise?
What determines exercise ventilation besides the changing rate of CO2 delivery to the lungs?
What determines exercise ventilation besides the changing rate of CO2 delivery to the lungs?
What is the relationship between work rate and the distribution of cardiac output to exercising muscle?
What is the relationship between work rate and the distribution of cardiac output to exercising muscle?
What is the end-capillary PO2 in the exercising muscles during maximal exercise?
What is the end-capillary PO2 in the exercising muscles during maximal exercise?
What happens to exercise endurance when exercise is performed above the AT?
What happens to exercise endurance when exercise is performed above the AT?
What is the primary factor that determines the degree of cardiovascular and ventilatory responses to exercise?
What is the primary factor that determines the degree of cardiovascular and ventilatory responses to exercise?
What is the primary role of the carotid bodies during exercise?
What is the primary role of the carotid bodies during exercise?
What happens to PaO2 during exercise?
What happens to PaO2 during exercise?
What is the relationship between exercise above the AT and CO2 production?
What is the relationship between exercise above the AT and CO2 production?
During exercise, what affects external respiration?
During exercise, what affects external respiration?
What happens to AT when cardiovascular transport of O2 is impaired?
What happens to AT when cardiovascular transport of O2 is impaired?
What are the powerful ventilatory stimuli during exercise above the AT?
What are the powerful ventilatory stimuli during exercise above the AT?
What alters the gas exchange kinetics during exercise above the AT?
What alters the gas exchange kinetics during exercise above the AT?
What enables the muscle end-capillary PO2 to be sufficiently high in all muscle capillary beds during maximal exercise?
What enables the muscle end-capillary PO2 to be sufficiently high in all muscle capillary beds during maximal exercise?
What determines exercise ventilation?
What determines exercise ventilation?
What provides sufficient ventilatory drive to minimize the decrease in arterial pH that occurs above the AT?
What provides sufficient ventilatory drive to minimize the decrease in arterial pH that occurs above the AT?
What happens to PaO2 during exercise?
What happens to PaO2 during exercise?
What depends on the work rate during exercise?
What depends on the work rate during exercise?
What reduces exercise endurance?
What reduces exercise endurance?
What is the main influence on the cardiovascular and ventilatory responses to exercise?
What is the main influence on the cardiovascular and ventilatory responses to exercise?
What is impaired when the cardiovascular transport of O2 is impaired?
What is impaired when the cardiovascular transport of O2 is impaired?
