Posted on June 17, 2013
| How much air do we breathe? The normal amount of air that we breathe in and out when we are at rest is called tidal volume (TV). An average tidal volume is around half a liter. We can also inhale a very large amount of air and then exhale all the air we can, the volume of that exhaled air is called our vital capacity (VC) (typically 3.1-4.8 liters). We cannot exhale all the air from our lungs. There is approximately 1.2 liters of air that remains in our respiratory tracts; it is called the residual volume (RV). The total amount of air that we can hold (the vital capacity plus the residual volume) is the total lung capacity (TLC). Its volume is approximately 4.2-6 liters.In this activity we will measure the tidal volume (TV) and the vital capacity (VC) using a spirometer logger sensor. Download experiment |
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