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Pain Types and Qualities
In this lecture ´´ Pain and Thermal Sensations ´´ are explained. Section one is about ´´Pain Types and Qualities´´. In the start of this lecture, pain protective mechanism is discussed. A comparison between fast and slow pain is then given. The educator then emphasizes on the pain receptors and their stimuli. Later, non-adapting nature of pain receptors is discussed which is followed by the discussion about the rate of tissue damage as a stimulus for pain. In the end, tissue ischemia and muscle spasm are depicted and discussed as a cause of pain.
Dual Pathways for Pain Signal Transmission
Section two is about ‘Dual Pathway for Pain Signal Transmission’’. In the beginning, pain pathways are elaborated. After that, dual pain pathways in cord and brain stem are discussed in detail. Later in this section, neospinothalmic tract for fast pain and paleospinothalmic pathway for slow chronic pain is explained. This section is concluded by discussing the capability of pain signals to arouse overall bran excitability.
Pain Suppression System
Section three is about ‘’ Pain Suppression System”. In the start, analgesia and analgesia system is explained. The educator then tells about some transmitter substances. In the end of this section, the brain’s optiate system is explained.
Referred Pain and Visceral Pain
Section four is about “Referred Pain and Visceral Pain’’. The section is started with a brief discussion about referred pain and the mechanism of referred pain. After discussing the visceral pain in detail, the difference between surface and visceral pain is explained. In the end of this session, causes of visceral pain and Brown- Sequard Syndrome is elaborated.
Section five is about “Position Senses and AL Systems’’. The final session begins with the discussion about the thermal receptors and their excitation. Types of receptors and stimulation of thermal receptors are then elaborated. It is followed by the discussion about the mechanism of stimulation of thermal receptors and freezing and burning hot sensations. Adaptation of thermal receptors and transmission of thermal signals in nervous system is explained in the end of this lecture.