<prompt> Intrapleural Pressure during forceful expiration is- 20 mm Hg5 mm Hg- 5 mm Hg20 mm Hg  <response>: Intrapleural Pressure: ITP Intrathoracic PressureIt is the pressure within pleural space space between visceral and parietal pleuraAt beginning of inspiration -2.5 mm Hg - 5 cm H2OAt end of inspiration - 6.0 mm Hg - 10 cm H2OAt end of expiration - 2.5 mm Hg - 5 cm H2OForceful inspiration - 20 mm HgForceful expiration 20 to 30 mm Hg 