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50 Cards in this Set
- Front
- Back
A CNS neuronthat fors an intermediate synaptic connection between other neurons.
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Interneuron
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Specialized receptors on nerves that transmit pain impulses.
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Nociceptors
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A multisynaptic spinal reflex that is normally elicited by a noxious stimulus.
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Withdrawal Reflex
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The level of noxious stimulus required to alert the individual to possibe tissue damage.
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pain threshold
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second-order nuerons of the pain and temperature pathways. teaxons of these cells cross the midline of the spinal cord and ascend in the anterior lateral fasicuculus.
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Tract Cells
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System in the brain that controls emotion.
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Limbic System
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heat that is gained or lost trough the indirect transmission of energy.
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Radiant Heat
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A cluster of nuerons in the peripherel nervous system.
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Ganglia
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A cluster of neurons in the CNS
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Nucles (Nuclei)
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Pertaining to the body
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Somatic
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through the skin
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transcutaneous
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pertaining to organs of the body
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Visceral
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A sensory receptor formed by a nerve fiber and surrounding connective tissue cells.
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Encapsulated receptor
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Gray matter in the center of the brain
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Thalmus
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The most superficial of the receptor organs
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Merkel's disks
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Detect every light touch of the skin
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hair follicle receptors.
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less sensitive to mechanical pressure, but are specialized to detect moving or vibrating stimuli on the skin. Rapidly adapt to constant pressures.
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Meissner's corpuscles.
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Large encapsulated receptor organs found in the skin and deeper tissues
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Pacinian Corpuscles
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pertaining to the opposite side of the body.
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Contralateral
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A segmental skin area supplied by a spinal nerve root.
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Dermatome
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On the same side of the body.
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Ipsilateral
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The ascending fiber system that conveys pain and temperature sensation from spinal cord to the cerebral cortex.
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Anterior lateraL system
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The small bundle of fibers in the dorsolateral spinal cord formed by ascending or descending primary afferent fibers that carry pain and temperature sensation.
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Dorsolateral fasciculus (lissauer's tract)
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The most caudal region of the brain stem. Contains many cranial nerve nuclei and is important in visceral control.
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Medulla
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the most rostral region of the brain stem. Involved in muscle control and modulation of pain. Also processes visual and auditory information.
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Midbrain
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A nucleus in the caudal medulla that relays fine touch and proprioceptive information from the upper body to the thalmus.
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Nucleus cuneatus
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A nucleus in the caudal medulla that relays fine touch and proprioceptive information from lower body to the thalmus
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Nucleus gracilis
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the large bundle of fibers in the anterolateral spinal cord and brain stem that carry second-order pain fibers to the brain stem and thalamus. This bundle includes fibers that are often called the spinothalmic tract.
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Anterior lateral fasciculus
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Neurons in the spinal cord and thalamus that respond to a broad range of mechanical pressures. They respond to both touch and pain.
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Wide dynamic range cells
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pain that is well localized
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Epicritic Pain
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the crebral hemishperes and thalamic region of the brain
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Forebrain
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A massive band of ascending and descending fibers in the forebrain that connect the cerebral cortex to thalamus, brain stem, and spinal cord.
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Internal capsule
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The fibers from different regions of the body are systematically distributed along the surface of this gyrus forming a "map" of the body spread across the cortex
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homunculus
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midline area of the cortex
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cingulate gyrus
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poorly localized pain sensation
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Protopathic pain
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the process of being made sensitive to a specific substance
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sensitized
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An area in the cerebral cortex, located in the postcentral gyrus of the parietal lobe, that is important in the perception of touch and proprioception and in the localization of pain sensation.
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Somatosensory cortex
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This theory holds that the A-beta fibers form indirect connections with cells of the ALS in the dorsal horn.
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Gate-Control Theory
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Directly stimulate nociceptors
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Bradykinin
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Sensitization of the nerve fibers so that other mediators can enhance nociception
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Prostaglandin
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Neurotransmitter released centrally to produce the pain response and peripherally producing hyperalgesia and inflammatory responses.
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Substance P
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Released by mast cells to directly stimulate nociceptors
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Histamine
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A substance released by the body that reduces the perception of pain by bonding to pain receptor sites.
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Enkephalin
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The ability of a modality or treatment regimen to produce the intended effects.
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Efficacy
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A device or "drug" that has no physiological effect on the body.
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Sham
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Receive descending fibers from the cingulate cortex and several other regions of the cerebral cortex that play a role in emotion control.
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periaqueductal gray (PAG)nuclei
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Outside or away from its normal position; in an abnormal position or sequence.
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Ectopic
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Swelling or other mass formation around a nerve. Normally formed by connective cells instead of neurons
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Neuroma
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Destruction, trauma, or inhibition of a nerve
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Neuropathy
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Pain emanating from muscle and connective tissues that is persistent and shows no indication of being caused by arthritis or other nociceptive process.
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myofascial pain syndrome or trigger point pain.
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