What is the effect of the contraction of diaphragm on the thoracic chamber?

What is the effect of the contraction of diaphragm on the thoracic chamber?
  1. It decreases the volume of the thoracic chamber
  2. It increases the volume of the thoracic chamber
  3. It has no effect on the volume of the thoracic chamber
  4. It increases the pressure in the thoracic chamber

Solution

The contraction of the diaphragm increases the volume of the thoracic chamber in the antero-posterior axis.

Asked in: NCERT

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