NURSE-UN 1435 Midterm: Structure and Pain Pathways copy
24 Oct 2018
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* afferent = receive and efferent = act * single dorsal root of a spinal nerve: reflex response: involuntary muscle contraction away from pain source. All of your senses (except smell, which goes to our brain"s emotional center) are wired directly to this bundle of neurons about the size of your little finger. Often the ras is compared to a filter or a bouncer (like at a night club) that works for your brain. It makes sure your brain doesn"t have to deal with more information than it can handle and plays a big role in the sensory information you perceive daily. Ras plays an important role in regulating sleepiness and wakefulness. It also is involved in the pain pathway and pain response. The somatosensory system relays information about four major modalities: touch, temperature, body position and pain. Somatosensory information is sequentially transmitted over three types of neurons.
