The air that can not be exhaled is called residual volume.
TV = the amount of air displaced during normal breathing.
IRV = The amount of air that can be taken in forcibly beyond tidal volume
Erv= The amount of that can be expelled forcibly.
Vital capacity = the total amount of exchangeable air.
Total Lung capacity = TV + IRV + ERV + RESIDUAL VOLUME
The residual volume is the volume of air remaining in the lungs after the most powerful expiration.
When measuring chest circumference with a cloth tape during forced expiration, the inspiration numbers typically go down. This is because forced expiration reduces the volume of air in the lungs, leading to a smaller chest circumference compared to inspiration, when the lungs are filled with air and the chest expands.
The movement of air on and out the lungs is called respiration. The movement of air into the lungs is called inhalation (inspiration). The movement of air out of the lungs is called exhalation (expiration).
Intrapleural pressure becomes positive during forced expiration or coughing when the muscles contract forcefully to increase the pressure within the thoracic cavity. This positive intrapleural pressure helps to push air out of the lungs.
Letting air out of the lungs is known as expiration. | Snapsolve
The air inside the lungs is never replaced completely. 1500 ml of air is always present in the lungs. Therefore,gaseous exchange continues in the lungs even during expiration .
residual volume
Air moves into the lungs when the diaphragm is flattened. The diaphragm is relaxed (arched) during expiration.
residual volume
Expired means past use or dead. Inspired (inspire) means to be enlivened or filled with exalting emotion.
Inspiration.
The act of expelling air from the lungs