Volumes & Capacities

there is no overlap in

lung volumes

lung volume at which the 3 passive expiratory and inspiratory forces balance

passive thoracic forces, passive lung forces, and passive abdominal forces

volume of air inhaled and exhaled during any single expiratory cycle (an inhalation followed by an exhalation)

Tidal volume (TV)

level/state of equilibrium

Resting expiratory level (REL)

Quantity of air that can be forcibly exhaled following a quiet or passive exhalation

Expiratory Reserve Volume (ERV)

another term for expiratory reserve volume

resting lung volume

quantity of air that remains in lungs and airways after maximum exhalation

Residual volume (RV)

when they say a person is trying to speak on residual air, this is ___

not true

why is there residual volume

because of the pleura that couple the thorax to the rib cage

maximum volume of air that can be inhaled from the resting expiratory level

inspiratory capacity (IC)

TV + IRV =

IC

quantity of air that can be exhaled after as deep an inhalation as possible

vital capacity (VC)

TV + IRV + ERV =

VC

quantity of air in the lungs and airways at resting expiratory level

functional residual capacity (FRC)

ERV + IRV =

FRC

quantity of air the lungs are capable of holding at the height of a maximum inhalation

total lung capacity (TLC)

RV + ERV + TV + IRV =

TLC