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- Explain the pain pathway and how morphine alters the concious perception of painBriefly describe the transmission of pain from the periphery of the body to its perception in the brain. Acknowledge the difference in transmission between acute (sharp) and chronic (dull) pain.Explain the pain pathway and how Morphine alters the conscious perception of pain.
- Pain receptors :-a- become more sensitive with prolonged stimulationb- are stimulated by prostaglandinsc- are more numerous in viscera than other tissuesd- include different morphological typesThermal sensations :-a- are evoked by all changes in environmental temperaturesb- are evoked by stimulation of thermo-sensitive pain receptorsc- are involved in regulation of metabolic activityd- are transmitted by Aβ sensory fibersGeneral sensations :-a- originate from all sensory receptors of the bodyb- are mediated by somatic sensory fibers onlyc- include the sense of movementd- include the sense of equilibrium
- Fill in the blank: A sensation may seem to fade away when receptors are continuously stimulated as a result of_______________________ adaptation.Briefly describe three methods of “closing the gate” and reduc-ing pain.Pain sensation :-a- is evoked by strong stimulation of specific receptorsb- produces reactions that block transmission of pain impulsesc- arises from small encapsulated receptorsd- occurs when the stimulus causes damage of the sensory receptors