Question:
The vital capacity includes
A. Expiratory reserve volume
B. Inspiratory reserve volume
C. Tidal volume
D. Residual volume
Choose the correct answer from the options given below
The vital capacity includes
A. Expiratory reserve volume
B. Inspiratory reserve volume
C. Tidal volume
D. Residual volume
Choose the correct answer from the options given below
A. Expiratory reserve volume
B. Inspiratory reserve volume
C. Tidal volume
D. Residual volume
Choose the correct answer from the options given below
Show Hint
Spirometry Formulas:
$\text{Vital Capacity (VC)} = \text{IRV} + \text{TV} + \text{ERV}$.
$\text{Total Lung Capacity (TLC)} = \text{VC} + \text{Residual Volume (RV)}$.
$\text{Vital Capacity (VC)} = \text{IRV} + \text{TV} + \text{ERV}$.
$\text{Total Lung Capacity (TLC)} = \text{VC} + \text{Residual Volume (RV)}$.
Updated On: Sep 7, 2026
- A only
- A and B only
- A, B and C only
- All A, B, C and D
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Spirometric respiratory lung volumes and capacities: Vital Capacity (VC) is the maximum volume of air exhaled following maximal inspiration.
Key Formula or Approach:
\[ \text{Vital Capacity (VC)} = \text{Inspiratory Reserve Volume (IRV)} + \text{Tidal Volume (TV)} + \text{Expiratory Reserve Volume (ERV)} \]
Step 2: Detailed Explanation:
In pulmonary physiology and spirometry:
1. Vital Capacity (VC): The maximum volume of air that an animal can forcefully exhale after a maximal voluntary inspiration. It is the sum of three component volumes:
- B. Inspiratory Reserve Volume (IRV)
- C. Tidal Volume (TV)
- A. Expiratory Reserve Volume (ERV)
2. Residual Volume (RV) (D): The volume of air remaining in the lungs after maximal forced expiration; it cannot be exhaled and is part of Total Lung Capacity (TLC = VC + RV), not Vital Capacity.
Thus, Vital Capacity includes A, B, and C only.
Step 3: Final Answer:
Hence, Vital Capacity includes A, B and C only, corresponding to option (C).
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