Question

Which of the following sequences is correct
to initiate inspiration?
1. The contraction of external intercostal
muscles raises the ribs and sternum
II. Volume of thorax increases in the dorso-
ventral axis
III. Intrapulmonary pressure decreases
IV. Diaphragm contraction
V. Air rushes into lungs
VI. Volume of thorax increases in the
anterio-posterior axis​

Answer 1

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Answer 2

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