30 Questions
What is the formula for alveolar ventilation (VA)?
$VA = (VT - VD) \times frequency$
What does the oxyhemoglobin dissociation curve shift to the left from?
Increase in blood pH
What is the function of central chemoreceptors in the body?
Detect pH
What is the normal blood pH at rest?
7.4
What is the effect of CO2 on blood pH, which causes a decrease in the affinity of oxygen for hemoglobin?
Bohr effect
What is the primary function of peripheral chemoreceptors in the body?
Detect hypoxia and hypercapnia
What does the arterial-venous oxygen (a-vO2) difference indicate?
Difference in energy production/consumption
What is the primary factor that increases hemoglobin's saturation with oxygen as it increases?
PO2
What is the effect of training on capillarization?
Increases capillarization
What is the formula for minute ventilation (VE)?
$VE = VT \times frequency$
What is the definition of exercise-induced arterial hypoxemia (EIAH)?
Condition when O2 carried in arterial blood is severely reduced
What are the adverse cardiovascular effects of diabetes?
Increases BP
What are the direct benefits of physical activity?
Helps pulmonary system
What are ergogenic aids?
Substances (or devices) that enhance energy production, use, or recovery and provide athletes with a competitive edge
What is blood doping?
Increase # of RBCs to enhance oxygen capacity
What is the atmospheric pressure at sea level?
760 mm Hg
What happens to venous blood saturation as workload increases?
Decreases and plateaus around 80%
What is the definition of ventilation?
Not a linear increase, with break points where it increases faster
What is the definition of A-a (alveolar to arterial) PO2 difference?
Difference in PO2 between alveolar and arterial blood
What is the definition of O2 extraction from blood?
Plateaus around 50% max work rate
What is the formula for minute ventilation (VE)?
VE = frequency * tidal volume
What is the definition of hyperpnea?
Increased depth and rate of breathing
What does the VD/VT ratio measure?
Measure of gas exchange efficiency
What is the Triphasic response in relation to ventilation?
3 phases of response
What does the term 'ventilatory drift' refer to?
Rise in ventilation after a period of exercise
What is the physiological dead space primarily due to?
Non-perfused alveoli
What is the main factor influencing minute ventilation (VE)?
Work rate
What is the formula for physiological dead space (VD)?
1mL/body weight
What is the percentage of oxygen in room air?
21%
What is the main function of tidal ventilation?
Initial increase in minute ventilation
Test your knowledge of ventilation, aerobic energy, respiration, and the exchange of air with this quiz. Challenge yourself with questions on the processes involved in energy production, the intake of oxygen, and the release of carbon dioxide. See how well you understand the definitions and concepts related to respiration and ventilation.
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