Delve into a comprehensive 3-hour lecture on the central nervous system's sensory and ascending tracts, focusing on the spinothalamic and spinocerebellar pathways. Explore the structure and function of tracts, receptors, dorsal and ventral roots, and spinal cord white matter. Examine the dorsal column medial lemniscal system, anterolateral tract system, and pain and temperature pathways, including gating theory and descending analgesia. Investigate dorsal and anterior spinocerebellar pathways, and review minor pathways such as spinotectal, spino-olivary, and spinoreticular. Gain a thorough understanding of neuroanatomy and the complex sensory pathways crucial for human survival and response to stimuli.