By the contration in radial muscle of diaphragm it become flattened in shape, so, volume of thoracic cavity increases in :-

Contraction of diaphragm increases the volume of thoracic chamber in the

Contraction of diaphragm increases the volume of thoracic chamber in the

During inspiration, the volume of thoracic caity increases because of

During inspiration, the volume of thoracic caity increases because of

What is the effect on the volume of pulmonary cavity when volume of thoracic cavity increases ?

What is the effect on the volume of pulmonary cavity when valume of thoracic cavity increases ?

Direction : In each of the following questions , a statement of Assertion is given and a corresponding statement of Reason is given just below it .Of the four statements ,given below,mark one as the correct answer . Assertion: During inhalation , the diaphragm goes downward. Reason : The volume of thoracic cavity decreases.