Lung Volumes and Capacities · Physiology

Which combination constitutes vital capacity?

  1. TV + IRV
  2. IRV + ERV + RV
  3. TV + IRV + ERV
  4. TV + ERV + RV
Show answer and explanation

Correct answer: TV + IRV + ERV

Vital capacity is the sum of tidal volume, inspiratory reserve volume, and expiratory reserve volume. It represents the maximum volume exhaled after full inspiration.

Difficulty: Medium Question 4 of 40

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