Loss of pulmonary elastic tissue in ‘emphysema’ reduces A. Physio

1.	Loss of pulmonary elastic tissue in ‘emphysema’ reduces A. Physiological dead space. B. Anatomical dead space. C. Residual volume. D. Vital capacity. E. The percentage of the vital capacity expired in one second.
Answer» A. False It increases as the walls between alveoli break down to form large sacs. B. True Destruction of elastic fibres holding airways open allows them to narrow. C. False It is increased as airways close more readily than usual during expiration. D. True It decreases as the residual volume increases. E. True Thus it is a typical obstructive airways disease.

Loss of pulmonary elastic tissue in ‘emphysema’ reduces A. Physiological dead space. B. Anatomical dead space. C. Residual volume. D. Vital capacity. E. The percentage of the vital capacity expired in one second.

Answer»

A. False It increases as the walls between alveoli break down to form large sacs.

B. True Destruction of elastic fibres holding airways open allows them to narrow.

C. False It is increased as airways close more readily than usual during expiration.

D. True It decreases as the residual volume increases.

E. True Thus it is a typical obstructive airways disease.

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Loss of pulmonary elastic tissue in ‘emphysema’ reduces A. Physiological dead space. B. Anatomical dead space. C. Residual volume. D. Vital capacity. E. The percentage of the vital capacity expired in one second.

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