Pathophysiology Chapter 15 questions and answers graded A+

Pathophysiology Chapter 15Pain Therories - correct answer Specificity Gate Control Specificity Theory - correct answer amount of pain is related to amount of tissue injury account for many types of injuries but does not explain PSYCH contributions Gate Control Theory - correct answer Current modern theory- not perfect, but better than specificity Physical pain perception is modulated by interaction between different neurons Projection vs Inhibitory Neurons - correct answer Projection- activated small fibers that sense pain Inhibitory- large fibers stimulated along with small stop pain message to brain *When you are touching something, large fibers activate the projection and inhibitory neurons so no pain signal is sent, the gate is closed Nociception and Nociceptors - correct answer The perception of pain. Dedicated receptors and afferent pathways detect and transmit noxious or damaging stimuli Nociceptors- transmit impulses arising from skin, muscle, joints, arteries, and viscera *respond to chemical, mechanical, and thermal stimuli. Nature and distribution of nociceptors affect sensitivity A Delta Fibers - correct answer lightly myelinated, medium sized mechanonociceptors and mechanothermal nociceptors well localized, sharp pain convey rapid reactions to stimuli C Polymodal Nociceptors - correct answer unmyelinated, small fivers transmit sensation of diffuse burning or aching slow pain