CHAPTER 49
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Chapter 49 – Somatic Sensations II: Pain, Headache, and Thermal Sensations
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This chapter explains pain pathways (fast Aδ vs slow C fibers), neurotransmitters, and spinothalamic tracts with clinical correlations.
It covers mechanisms of referred pain, headache types (migraine, cluster, tension), and pain modulation via gate control and descending inhibition.
Thermal sensations are detailed, including receptor types, adaptation, and central processing of heat and cold.