Vital Capacity is defined as the sum of which volumes?

Prepare for the NBRC TMC Exam by reviewing essential normal values. Enhance your understanding with multiple-choice questions featuring detailed explanations and hints. Ensure your readiness for success!

Multiple Choice

Vital Capacity is defined as the sum of which volumes?

Explanation:
Vital capacity is the maximum amount of air you can exhale after taking the deepest possible breath. It equals the tidal volume (air in a normal breath) plus the inspiratory reserve volume (the extra air you can inhale after a normal inhalation) plus the expiratory reserve volume (the extra air you can exhale after a normal exhalation). The residual volume, which remains in the lungs after a full expiration, is not included because it cannot be voluntarily expelled. So, VC = TV + IRV + ERV.

Vital capacity is the maximum amount of air you can exhale after taking the deepest possible breath. It equals the tidal volume (air in a normal breath) plus the inspiratory reserve volume (the extra air you can inhale after a normal inhalation) plus the expiratory reserve volume (the extra air you can exhale after a normal exhalation). The residual volume, which remains in the lungs after a full expiration, is not included because it cannot be voluntarily expelled. So, VC = TV + IRV + ERV.

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