Explain the relationship among vital capacity, tidal volume, forced inhalation volume, and forced exhalation volume

Expert Solution

Tidal volume (TV) is described as the volume of air that is transported into and out of the lungs with each respiratory cycle during quiet breathing.

Forced inhalation volume is produced by a deep inhalation, past a tidal inspiration. This extra volume that can be brought into the lungs during a forced inspiration sums up to the Inspiratory reserve volume (IRV). .

Forced exhalation volume measures the amount of air exhaled by a person during a forced breath, past a normal tidal expiration. This amount of air sums up to the Expiratory reserve volume (ERV)

Vital capacity(VC) is the amount of air a person can move into or out of his or her lungs, and is the sum of all of the volumes except residual volume (TV, ERV, and IRV). It refers to the maximal volume of air that can be expired following maximum inspiration.

Vital capacity is the sum of tidal volume, inspiratory reserve volume, and expiratory reserve volume.

Therefore, VC = TV + IRV + ERV. Hence the relationship is thus explained.

gladiator answered 2 years ago

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