PHYSIOLOGY
GENERAL PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Volume of air in the lungs after a maximum inhalation
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Maximum volume of air that can be exhaled after a maximum inhalation
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Volume of air in excess of tidal volume that can be forcibly exhaled
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Volume of air breathed in and out in any one breath
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Detailed explanation-1: -Vital capacity (VC) is the maximum amount of air a person can expel from the lungs after a maximum inhalation. It is equal to the sum of inspiratory reserve volume (IRV), tidal volume (TV), and expiratory reserve volume (ERV). So, the correct option is ‘Vital capacity’.
Detailed explanation-2: -Vital capacity is the maximum volume of air that a person can exhale after maximum inhalation. It can also be the maximum volume of air that a person can inhale after maximum exhalation. A person’s vital capacity can be measured by a spirometer which can be a wet or regular spirometer.
Detailed explanation-3: -Vital Capacity(VC) It is the total amount of air exhaled after maximal inhalation. The value is about 4800mL and it varies according to age and body size. It is calculated by summing tidal volume, inspiratory reserve volume, and expiratory reserve volume.
Detailed explanation-4: -Vital capacity is the maximum volume of air that can be released from the lungs by forceful expiration after maximum inspiration. Vital capacity can be considered as an indicator of normal and healthy respiratory capacity and the strength of the muscles in the thoracic cavity.