3. Old stuff
          3.2. Old physio stuff (around 2005)
              3.2.3. Physiology
                  3.2.3.13. Respiratory
                      3.2.3.13.2. Ventilation and perfusion
 3.2.3.13.2.2. Ventilation 

[KB2:p148]

Diaphragm contraction is responsible for 70% of tidal volume

Diaphragm moves by about 1cm during tidal breathing, but may move 10cm during a vital capacity breath

During normal tidal breathing, peak alveolar pressure = +1cm H2O