(IMAGE (TYPE "GIF") (ORIGINAL-PATH "gifs/Syllabus Chapters/SomatoSpthal/spthal.cord.gif") (PATH "gifs/NotAvailable.gif")) (OUTLINE-COLOR (NAME "YELLOW")) (STRING-COLOR (NAME "RED")) (PIN-COLOR (NAME "RED")) (FRAME-INFO (STRING "Pain Afferents. \(Spinal cord images modified from N.B. Everett, Functional Neuroanatomy. Lea & Febiger 1971, with permission of Williams & Wilkins\). Pain afferents are shown ascending two cervical cord segments \(copies\) in the posterolateral fasciculus of Lissauer before terminating in the posterior gray \(a primary target is Lamina I\). The secondary fibers arise from cells in the posterior gray \(Lamina I, IV, and V\), cross the midline in the anterior white commissure, and form the spinothalamic tract which ascends through the medulla to reach the thalamus \(see the next frame\).")) 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