Air volume in breathing movements can be estimated by:

stethoscope

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hygrometer

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sphygmomanometer

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spirometer

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Solution

The correct option is D
spirometer

An instrument for measuring air inhaled into and exhaled out of the lungs; it provides a simple way of determining most of the lung volumes and capacities.

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Similar questions

In breathing movements, air volume can be estimated by

(a) stethoscope

(b) hygrometer

(d) spirometer

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