Choose the correct option:(1) The volume of g | vedclass

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(B) $(1)$ The volume of air involved in breathing is measured using an instrument called a $Spirometer$.$(2)$ Inspiration (breathing in) is initiated

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$(1)$ Spirometer,$(2)$ Contraction

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(B) $(1)$ The volume of air involved in breathing is measured using an instrument called a $Spirometer$.$(2)$ Inspiration (breathing in) is initiated by the contraction of the diaphragm,which increases the volume of the thoracic cavity in the antero-posterior axis,thereby decreasing the intra-pulmonary pressure and allowing air to flow into the lungs.Therefore,the correct sequence is $Spirometer$ and $Contraction$.

Choose the correct option:
$(1)$ The volume of gases involved in breathing movements is measured by $Sphygmomanometer / Spirometer$.
$(2)$ Inspiration is initiated by the $relaxation / contraction$ of the diaphragm.

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Choose the correct option:$(1)$ The volume of gases involved in breathing movements is measured by $Sphygmomanometer / Spirometer$.$(2)$ Inspiration is initiated by the $relaxation / contraction$ of the diaphragm.