Quiz 7 Flashcards
Device that recaptures expired breath and records such variables such as rate and the depth of breathing, speed of expiration, and rate of oxygen consumption
Spirometer
Amount of air inspired or expired
Spirometry
1 inspiration, 1 expiration
Respiratory cycle
Amount of air that enters or leaves during one cycle
Tidal volume
What is the average tidal volume at rest?
500 mL
During forced maximal inspiration, volume of air in addition to tidal volume
Inspiratory reserve volume
What is the average inspiratory reserve volume?
3000 mL
During forced maximal expiration, volume of air in addition to tidal volume is expelled from the lungs
Expiratory reserve volume
What is the average expiratory reserve volume?
1,100 mL
Amount left in lungs even after the most forceful expiration; maintains oxygen and carbon dioxide levels within the lungs
Residual volume
What is the average residual volume?
1200 mL
Maximum volume of air a person can exhale after taking the deepest breath possible
Vital capacity
How do you find vital capacity?
IRV + TV + ERV
What is the average male vital capacity?
4800 mL
What is the average female vital capacity?
3100 mL
How do you find total lung capacity?
Vital lung capacity + residual volume
What is the average total lung capacity?
5800 mL
How do you find minute volume?
respiratory rate x TV
How do you find airway resistance
FEV1/FVC
What is considered a healthy airway resistance?
Above 75%
Found in medulla monitor pH of CSF
Central chemoreceptors
Found in aortic and carotid bodies
Peripheral chemoreceptors
Detect CO2 levels in blood and CSF
Chemoreceptors
If CO2 increase too high, then breathing and heart rate __ to ___ levels to normal
increase, decrease
