During inspiration air passes into lungs due to ( ) a. Increased volume of thoracic cavity b. Fall in pressure inside the lungs c. Increase in the volume of thoracic cavity and fall in lung pressure. d. Muscular expansion of lungs
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Ur ans is C .....
inspiration takes place by contraction of intracoastal muscles and sternum in dorso ventral manner....
which leads to increase in the volume of thoracic cavity and decrease in lungs pressure compare to outside atm...so atm air enters into our lungs
inspiration takes place by contraction of intracoastal muscles and sternum in dorso ventral manner....
which leads to increase in the volume of thoracic cavity and decrease in lungs pressure compare to outside atm...so atm air enters into our lungs
imrahul02:
is that correct???
Answered by
1
Ans c is correct........
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