What is a V/Q ratio and how does it affect oxygenation of blood in health and disease? In late stages of COPD, such as seen above, how is V/Q altered (Hint, see fig. 27-17) (Pulmonary System MO5,6,9,10)

What is a V/Q ratio and how does it affect oxygenation of blood in health and disease? In late stages of COPD, such as seen above, how is V/Q altered (Hint, see fig. 27-17) (Pulmonary System MO5,6,9,10)