all of the air that can be forced out of your lungs following a normal expiration is called forced exhalation.
all of the air that can be forced out of your lungs following a normal expiration is called forced exhalation.
all of the air that can be forced out of your lungs following a normal expiration is called?
forced exhalation
cough









































a cough is a sudden, and often repetitively occurring, protective reflex which helps to clear the large breathing passages from fluids, irritants, foreign particles and microbes. the cough reflex consists of three phases: an inhalation, a forced exhalation against a closed glottis, and a violent release of air from the lungs following opening of the glottis, usually accompanied by a distinctive sound.
cough
functional residual capacity









































functional residual volume (frc) "is the volume of air that will remain in the lungs after a normal expiration."









































it can be also derived as 









































erv + rv









































functional residual capacity (frc) is the volume of air present in the lungs at the end of passive expiration. at frc, the opposing elastic recoil forces of the lungs and chest wall are in equilibrium and there is no exertion by the diaphragm or other respiratory muscles.
functional residual capacity