Assertion: The lungs are situated in thoracic chamber which is anatomically an air-tight chamber.\

Question

Assertion: The lungs are situated in thoracic chamber which is anatomically an air-tight chamber.\ Reason : Such an arrangement is essential for breathing as we cannot directly alter the pulmonary volume.\

Professor PC Thomas Classes · Answer

(a) : The anatomical setup of lungs in thorax is such that any change in the volume of the thoracic cavity will be reflected in the lung (pulmonary) cavity. Such an arrangement is essential for breathing, as we cannot directly alter the pulmonary volume.