what is a pressure receptor
pressure. The force per unit area exerted by a gas or liquid over a surface in a direction perpendicular to that surface. The SI unit of pressure is the pascal (Pa), although blood pressure and intraocular pressure remain specified in the non-SI unit millimetres of mercury (mmHg). a pressure to the bodyâin excess of that which stimulates Meissner's corpuscles, Merkel's disks, or the hair receptors of light touchâthat stimulates the deeper receptors such as Pacini's corpuscles. These latter deep-pressure perception organs lie in the inner layers of the dermis and in the muscle and tendon groups.