<prompt> Intrapleural pressure isTranspulmonary pressure Alveolar pressureTranspulmonary pressure - Alveolar pressureTransmural pressure Alveolar pressureAlveolar pressure - Transpulmonary pressure  <response>: In physiology, intrapleural pressure also called intrathoracic pressure refers to the pressure within the pleural cavity. Normally, the pressure within the pleural cavity is slightly less than the atmospheric pressure, in what is known as negative pressure Ref: guyton and hall textbook of medical physiology 12 edition page number: 316,317,318 