Kinesiology 2236A/B Lecture Notes - Lecture 5: Group C Nerve Fiber, Afferent Nerve Fiber, Nociceptor

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2236A/B
• Professor: Dave Humphreys

Document Summary

Pain an unpleasant sensory and emotional experience associated with actual or potential tissue damage or described in terms of damage. Pain transmission: pain receptors called nociceptors are sensitive to. Chemical: afferent nerve fibers carry information from nociceptors. Two types of pain signals: a delta myelinated fast pain. Put your hand on a hot stove fast and danger move it directly and get away from situation: c fibers unmyelinated slow. Pain you feel in minutes, days, hours (e. g. sprained ankle) Located in skin and deep tissue ligament muscles and ligaments. Attempting to block the c fiber pain always need our a delta. T cell isn"t sending information to the brain that we are in pain. Gate is closed and therefore no pain: with pain stimulation c fibers become active. As they fire, they block the inhibitory sg and activate the t cells.