An increase in air pressure in the lungs is due to the

An increase in air pressure in the lungs is due to the
  • A.
    increase in the volume of the thoracic cavity
  • B.
    upward movement of he ribs
  • C.
    relaxation of the diaphragm
  • D.
    contraction of the intercostal musles
Correct Answer: Option C
Explanation
You May Also Like