NURS 366 Study Guide - Midterm Guide: Nociceptor, Group C Nerve Fiber, Myelin
Document Summary
Pain, temperature, and sleep neurology content 1. Differentiate between the two major types of nociceptors: a-delta myelinated fibers, larger myelinated fibers that rapidly transmit sharp, well localized. Receptors: mu, kappa, and delta: endorphins: Produce greatest sense of exhilaration and natural pain relief: dynorphins: Most potent endogenous opioid, bind with kappa receptors to impede pain signals: endomorphins, enkephalins: Bind with mu receptors and have potent analgesic effects. Most prevalent of the natural opioids & bind w/ delta receptors: endocannabinoids. Cannabis produces a resin containing cannabinoids: analgesic in humans, drawbacks: psychoactive and addictive properties. Differentiate between acute and chronic pain: acute pain, protective mechanism: Alerts individual to a condition or experience that is immediately harmful to the body: transient: Lasting seconds-days, but up to 2-3 months. Begins suddenly and is relieved after the pain stimulus is removed. S/s: increased hr, htn, diaphoresis, dilated pupils, acute somatic: A-delta fibers: pain is sharp and well localized. C fibers: dull, aching, and poorly localized.
