Question

what is the role of trachea , residual volume of air ​

Answer 1

what is the role of trachea , residual volume of air ​

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Answer 2

In other words, it is the volume of air that cannot be expelled from the lungs. This volume remains unchanged regardless of the lung volume at which expiration was started. ... The residual volume is an important component of the total lung capacity (TLC) and the functional residual capacity (FRC).