<prompt> Comparison of the apex of the lung, the base of the lung hasHigh pulmonary aerial pressure O2High pulmonary aerial pressure CO2High ventilation perfusion ratioSame ventilation perfusion ratio  <response>: Overall, perfusion increases more than ventilation at the base of the lung, resulting in lower VQ ratios in the base of the lung compared to the apex. In a healthy individual, the VQ ratio is 1 at the middle of the lung, with a minimal spread of VQ ratios from 0.3 to 2.1 from base to apex Ref: guyton and hall textbook of medical physiology 12 edition page number:332,333,334 