Respiration
exchange of gases between the atmosphere, blood, and cells
Ventilation
breathing.
Surface tension, elastic recoil, & compliance (ease lungs can be expanded (all affect ventilation)
Tidal Volume (TV)
volume of inspired or expired air with each normal breath
Inspiratory Reserve Volume (IRV)
amount of air that can be inspired forcefully after inspiration of tidal volume
Expiratory Reserve Volume (ERV)
amount of air that can be inspired forcefully after inspiration of tidal volume
Residual Volume (RV)
amount of air left in respiratory passages and lungs after maximal forced expiration
Inspiratory Capacity (IC)
IC = TV + IRV (maximum amount of air that can be inspired after normal expiration)
Vital Capacity (VC)
VC = IRV + TV + ERV (maximum volume of air that can be expelled after a maximum inspiration)
Respiratory Minute Volume (RMV)
the amount of air that enters your lungs in a minute
Atmospheric Pressure
760mmHg (usual) pressure in enviorment
Inspiration (in relation to diaphragm)
diaphragm contracts
Expiration (in relation to diaphragm)
diaphragm relaxes
Intrapleural Pressure
Pressure inside lungs:
Inspiration- decreases
Expiration- increases
Alveolar Pressure
Pressure in aveoli:
Inspiration- drops below atmospheric pressure
Expiration- increases above atmospheric pressure
Pulmonary Gas Exchange
blood reaches alveoli for O2 and then blood travels to left atrium to ventricles -> systemic circulation
Systemic Gas Exchange
blood delivers O2 to tissue cells
Spirometer
Used to test for asthma or COPD.
Measures ventilaiton
Spirogram
Graphic record of breathing! (read RIGHT to LEFT!!!)
