(i) During inhalation, the inter-costal muscles pull the ribs inwardly. (ii) During inhalation, diaphragm becomes dome shaped. (iii) During inhalation, the volume of thoracic cavity increases. Which of the above given processes occur(s) during inhalation is/are correct?
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(1)upwards and outwards.
(2)diaphragm becomes flat
(3)correct
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