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Physiology Sensory Systems I
Testing
10
Physiology
Graduate
09/13/2009

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Term
Muscle stretch receptor
Definition
Activated by increasing length; tonic receptor (slow)
Term
golgi tendon organ
Definition
increased tension of tendon activates; tonic receptor (slow adapting)
Term
Fast pain
Definition
group II or II fibers, fast, precisely localized
Term
slow pain
Definition
C fibers; aching, burning, or throbbing; poorly localized
Term
referred pain
Definition
pain that follows the dermatomal rule
Term
projected pain
Definition
pain is erroneously perceived to arise from an end organ; stimulus occurs somewhere along the pain pathway
Term
neuropathic
Definition
no pain receptor stimulus; pain due to dysfunction in PNS or CNS
Term
Gating
Definition
when one input blocks the input of another; can happen when interneurons are involved; TENS uses this principle for pain control
Term
descending analgesic system
Definition
descending pathway that inhibits nociceptor neurons in dorsal horn; blocks activation of spinothalamic tract
Term
Pharmacological treatment of pain at spinothalamic tract
Definition
NSAIDS: act on receptor

local anasthetic: block voltage-gated Na channels in sensory nerve fibers

opiate analgesic: act in dorsal horn and other sites
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