Respiratory Test Flashcards
(32 cards)
O2 content in air
20.9%
CO2 content in air
.04%
N2 content in air
78.6%
H2O content in air
.46%
In order to get partial pressure, you must multiply it by the ________
atmospheric pressure
Inspiration
period of breathing when air enters the lungs
Expiration
period of breathing when air leaves the lungs
Internal respiration
exchange of gases between blood and tissue cells
External respiration
exchange of gases between alveolar air and pulmonary capillary blood
Pulmonary ventilation
alternate flushing of air into and out of the lungs
Describes the fact that each gas in a mixture exerts pressure according to its percentage in the mixture
Dalton’s Law
States that P1V1=P2V2 when temperature is constant
Boyle’s Law
States that when gases are in contact with liquids, each gas will dissolve in proportion to its partial pressure and solubility in the liquid
Henry’s Law
Respiratory volume inhaled or exhaled during normal breathing
Tidal volume (TV)
Air in respiratory passages that does not contribute to gas exchange
Dead space volume
Total amount of exchangeable air
Vital capacity
Gas volume that allows gas exchange to go on continuously
Residual volume
Amount of air that can still be exhaled (forcibly) after a normal exhalation
Expiratory reserve volume
Sum of all lung volumes
Total lung capacity
Eupnea
normal breathing in terms of rate and depth
Apnea
lack of cessation of breathing
Hypoxia
chronic oxygen deficiency
Dyspnea
labored breathing, or “air hunger”
COPDs
emphysema, chronic bronchitis, asthma
