The volume of air in the lungs and the rate at which it is exchanged during inspiration and expiration was measured. The following diagram shows a group of the lung volumes and capacities:
Study the diagram carefully and explain briefly the following:
(a)Tidal volume.

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Solution

Tidal volume – The air breathed in and out in a normal quiet breathing is known as tidal volume.
The tidal volume(TV) is 500 mL.

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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

The volume of air which remains in the lungs after expiration is __________ volume.

Q. The volume of air in the lungs and the rate at which it is exchanged during inspiration and expiration was measured. The following diagram shows a group of the lung volumes and capacities: Study the diagram carefully and explain briefly the following:

(e) Residual volume

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_____.

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Tidal Volume

Standard XII Biology

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The volume of air in the lungs and the rate at which it is exchanged during inspiration and expiration was measured. The following diagram shows a group of the lung volumes and capacities: Study the diagram carefully and explain briefly the following: (a)Tidal volume.

Tidal volume – The air breathed in and out in a normal quiet breathing is known as tidal volume. The tidal volume(TV) is 500 mL.

The volume of air in the lungs and the rate at which it is exchanged during inspiration and expiration was measured. The following diagram shows a group of the lung volumes and capacities:
Study the diagram carefully and explain briefly the following:
(a)Tidal volume.

Tidal volume – The air breathed in and out in a normal quiet breathing is known as tidal volume.
The tidal volume(TV) is 500 mL.