NUR 239 Study Guide - Comprehensive Final Exam Guide - Liver, Nausea, Porth
20 Nov 2018
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Porth chapter 35 somatosensory function, pain, and headache. 2 segments before synapsing with association neurons in the dorsal horn, then the axons of association projection neurons cross thru the anterior commissure to the opposite side and then ascend upward in the previously described neospinothalamic and anterolateral pathways. Somatosensory systems, p. 854 -855: pain pathway: tissue injury leads to release of inflammatory mediators with subsequent nociceptor stimulation. The localization and meaning of pain occur at the level of somatosensory correct. 1, first order sensory neurons; 2, second-order sensory neurons; 3. Third-order sensory neurons: somatosensory systems: sensory systems can be conceptualized as a series of first-order, second-order and third-order neurons. First order neurons transmit sensory information from the periphery to the cns. Second-order neurons communicate with various reflex networks and sensory pathways in the spinal cord and travel directly to the thalamus. Topical medications are a new aspect of pain management, whose full potential has yet to be determined.
