What is the instrument that measures the amount of air inhaled and exhaled with each breath?
A
Sphygmomanometer
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B
Hygrometer
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C
Stethoscope
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D
Spirometer
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Solution
The correct option is D
Spirometer
A spirometer measures ventilation, the movement of air into and out of the lungs. The spirogram will identify two different types of abnormal ventilation patterns, obstructive and restrictive.