<prompt> Massage and the application of liniments to painful area in the body relieves pain due toStimulation of endogenous analgesic systemRelease of endorphins by the first order neurons in the brain stemRelease of glutamate and substance P in the spinal cordInhibition by large myelinated afferent fibers  <response>: Ans. d Inhibition by large myelinated afferent fibersRef: Ganong, 25th edp.172Massaging and applying counterirritants over the injured area relieves pain. The reason being gate-control mechanism of pain modulation 