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NUR 213 Pain
- Four theories of pain
Answer -Specificity theory -Pattern theory -Gate control theory -Neuromatrix theory
- Specificity theory
Answer Amount of pain is related to the amount of tissue injury
- Specificity theory accounts for many types of injuries, but does not explain-
Answer Psychologic contributions to pain and chronic pain
- Pattern theory
Answer Describes the role of impulse intensity and repatterning of the CNS
- Gate control theory explains the
Answer Complexities of the pain phenomenon
- Gate control theory
Answer Pain is modulated by a "gate" in the cells of the substantia gelatinosa in the spinal cord
- Gate control theory states nociceptive transmissions ("open"/"close") the gate
Answer "Open"
- Gate control theory states stimuli from nonnociceptive transmissions ("open"/"close") the
gate
Answer "Close"
- Neuromatrix theory expounds on the
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Gate control theory
- Neuromatrix theory
Answer Brain produces patterns of nerve impulses drawn from various inputs, including genetic, psychologic, and cognitive experiences
- Neuromatrix theory illustrates the
Answer Plasticity of the brain
- Plasticity
Answer The adaptable change in structure and function
- Neuromatrix theory proposes that sensory inputs to the brain produce
Answer
- Patterns of pan, but the stimuli may independently originate in the brain with no external
- Afferent neurons
input
Answer Sensory nerves
- Afferent neurons begin in the
Answer PNS, travel to the spinal gate in the dorsal horn, and then ascend to higher centers in the CNS
- Afferent neurons also carry
Answer Temperature, touch, proprioception, vibration, and pressure sensations into the spinal cord
- Interpretive centers are located in the
Answer Brainstem, midbrain, diencephalon, and cerebral cortex
- Efferent neurons
Answer Motor nerves
- Efferent neurons descend from the
Answer CNS to the dorsal horn of the spinal cord
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