(a) What is normal respiratory rate ?
(6) Name an instrument used for measuring volume of air.
(c) Mention its clinical significance.
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---- A person's respiratory rate is the number of breaths you take per minute. The normal respiration rate for an adult at rest is 12 to 20 breaths per minute
----A spirometer is an apparatus for measuring the volume of air inspired and -expired by the lungs. A spirometer measures ventilation, the movement of air into and out of the lungs.
----Spirometry is used to diagnose chronic lung diseases, such as chronic obstructive pulmonary disease (COPD) and emphysema. Some doctors also use spirometry to monitor your current treatment plan'
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