Which of the following statements are not cor | vedclass

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(D) $I.$ The diffusion membrane is made up of three layers: the thin squamous epithelium of alveoli,the endothelium of alveolar capillaries,and the ba

Vedclass · Accepted Answer

None of these

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(D) $I.$ The diffusion membrane is made up of three layers: the thin squamous epithelium of alveoli,the endothelium of alveolar capillaries,and the basement substance in between them. This statement is correct.$II.$ The solubility of $CO_{2}$ is $20-25$ times higher than that of $O_{2}$ across the diffusion membrane. This statement is correct.$III.$ Breathing volumes and capacities are estimated using a spirometer. This statement is correct.$IV.$ High $H^{+}$ concentration (low $pH$) in the blood shifts the oxygen-hemoglobin dissociation curve to the right,which favours oxygen dissociation from hemoglobin (Bohr effect). This statement is correct.Since all statements are correct,none of the options provided indicate an incorrect statement.

Column $I$	Column $II$
$(a)$ Pneumotaxic Centre	$(i)$ Alveoli
$(b)$ $O_{2}$ Dissociation curve	$(ii)$ Pons region of brain
$(c)$ Carbonic Anhydrase	$(iii)$ Haemoglobin
$(d)$ Primary site of exchange of gases	$(iv)$ $R.B.C.$

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Which one of the following statements is incorrect?

Match the following columns and select the correct option:

Column $I$ Column $II$

$(a)$ Pneumotaxic Centre $(i)$ Alveoli

$(b)$ $O_{2}$ Dissociation curve $(ii)$ Pons region of brain

$(c)$ Carbonic Anhydrase $(iii)$ Haemoglobin

$(d)$ Primary site of exchange of gases $(iv)$ $R.B.C.$

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