Kinesiology 2236A/B Lecture Notes - Lecture 5: Weight-Bearing, Vasodilation, Collagen
4 Nov 2017
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Pain and the role of hot and cold. Pain transmission: pain receptors called nocioceptors are sensitive to: Chemical: afferent nerve fibers carry info from nocioceptors towards the spinal cord. Step 3: with non-pain stimulation, large nerve fibers (a) are activated primarily, which activates the. Sg which then activates the inhibitory interneuron which then blocks the signal in the t- cell that connects to the brain: the gate is closed and therefore there is no pain. Can activate sg, which sends inhibitory signals which blocks pain coming from small c fibers. You now have nothing going up to the pain telling us we are sore. Types of a-beta input: pressure: mom rubs your head when you bump it; massage, vibration: 4 hz taps on the ankle x 10 min=released opiates and gate closes, position sense: shaking your finger when you hurt it; arom/prom.
