Opioid Analgesics drug abuse
Opioid Analgesics & drug abuse
Pain 0 an unpleasant sensation often caused by intense or damaging stimuli the most common reason for physician consultation interfering with a person's quality of life and general functioning protective response of human body
Pain • an unpleasant sensation often caused by intense or damaging stimuli • the most common reason for physician consultation • interfering with a person's quality of life and general functioning • protective response of human body
Gyrus postcentralis Perception: Perception: sharp dull quick delayed localizable diffuse Thalamus Anesthetics Anti- depressants Reticular Opioids formation Descending antinociceptive pathway Opioids 至 色 Nociceptors Cyclooxygenase Prostaglandins inhibitors Inflammation
Leg area Cerebral Sensory cortex homisphere interal capsule Pain Mldbrain pathway Spinal lemniscus Pons Medulla Cervical cord Lurmbar cord Fig.5.15 The spinthalamic tract system. The central pathways for pain,temperature,touch and pressure
Pain pathway
A B Spinal Nudeus Medial Periaqueducta Gray Matter Mesencephalon of NerveV Lemniscus Neotrigemino- Reticular thalamicTract Formation Medulla Dorsal Column Spinoreticular Tract Multisynaptic Afferent Systems Spinomesencephalic Tract Paleospinothalamic Neotrigemino- Tract thalamic Tract AnaesthesiaUK