Question

Which of the following is correct ?
i) The diaphragm contracts - volume of chest cavity increased.
ii) The diaphragm contracts - volume of chest cavity decreased.
iii) The diaphragm expands - volume of chest cavity increased.
iv) The diaphragm expands - volume of abdominal cavity decreased.
a) i
b)i& ii
c) ii & iii
div​

Answer 1

Option C (ii & iii)

contract - decrease

expand - increase

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Answer 2

Answer:

its option c) both 2nd and 3rd..

Explanation:

need an explanation -- its given in the image above.

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