Anatomy ventilation lab quiz

Vital capacity formula
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Terms in this set (22)
Vital capacity formula
VC=TV+IRV+ERV
Total lung capacity formula
TLC=TV+IRV+ERV+RV
respiratory rate definition
The number of breaths taken per minute
Tidal volume definition
The amount of air inhaled or exhaled per breath during quite breathing
Inspiratory reserve volume
the amount of air that can be forcefully inhaled beyond tidal volume
Expiratory reserve volume
the amount of air that can be forceful exhaled beyond tidal volume
How do you find tidal volume?
Measure in mm the distance of each wave, then convert it to ml per breath
Minute volume and definition
the amount of air moved into and out of the lungs in a minute MV= TVxRR
Where is CO2 detected?
Central chemoreceptors detect changes in pH from changes in CO2 in the CSF. These receptors are located in the medulla oblongata
Central chemoreceptors role in determining breaking points
When CO2 levels increases, pH levels decrease becoming more acidic. The central chemoreceptors detect the changes, and to get rid of the excess CO2 they increase breathing rate and depth.
Why does hyperventilation increase the time one can hold their breath?Since more CO2 is brought in than O2 being sent out, the chemoreceptors are signaled to lower CO2. Therefore since you lowered CO2, it buys additional time before reaching your break point.Normal tidal volume for men and women500mlNormal inspiratory reserve volume for men and women3100ml, 1900mlNormal expiratory reserve volume for men and women1200ml, 700mlNormal residual volume for men and women1200ml, 1100mlTotal lung capacity is themaximum volume of air the lungs can holdAirway resistance formula= FEV1.0 ÷ FVC x 100Forced Expiratory Volume (FEV) isthe percentage of the vital capacity that can be expelled in a specific period of time.Central chemoreceptors are located on theventrolateral surface of the medulla oblongataCentral chemo receptors only monitorpH changes in the CSF induced by changes in blood carbon dioxide levelsthe formation of H+ causes a _______ in the pHdecreaseperipheral chemo receptors are located in theaortic and common carotid arteries