The amount of air that moves in and out of the lungs, with each normal inspiration and expiration is called

Residual volume

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vital capability

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Tidal volume

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Tidal capacity

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Solution

The correct option is C Tidal volume
Tidal volume (symbol VT or TV) is the lung volume representing the normal volume of air displaced between normal inhalation and exhalation when extra effort is not applied. In a healthy, young human adult, tidal volume is approximately 500 mL per inspiration or 7 mL/kg of body mass.

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1200 ml volume of air which always remains in the lungs even after forcible expiration is called

Fill in the blanks

___i___is the volume of air that you take in during normal inspiration, or breathe out during normal expiration. The additional volume of air a person can inspire, beyond the tidal volume by putting in extra effort is____ii_____. The additional volume a person can expire, beyond the tidal volume, that is, after a normal expiration is normally ____iii_____.The volume of air remaining in the lungs after a maximal expiration i.e., the residual volume is normally ____iv_____.

When about 1500 ml of air remains in the lungs after forceful expiration, it is called the _________.

A person breathes in some volume of air by forced inspiration after having a forced expiration. This quantity of air taken in is

(a) total lung capacity

(b) tidal volume

(d) inspiratory capacity

Q. Choose the correct statements with regard to human respiration.
(A) Inspiration is facilitated by the contraction of phrenic and external inter-costal muscles
(B) Healthy human can inhale or exhale about 2000 to 3000 ml of air per minute
(C) Functional residual capacity represent the volume of left out air in lungs after expiration
(D) Total lung capacity is the total volume of air that could be accomodated in the lungs after forced inspiration.

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