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13 Cards in this Set
- Front
- Back
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Somesthesia mediates what 4 body sensations.
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Touch
Kinesthesia Temperature Pain (nociception) |
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Where are touch, pressure, and kinesthetic info processes in the spinal column?
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Dorsal column
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What are the anterolateral quadrants
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Ventral spinal region containing the "old system" fibers for pain and temperature
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Nucleus gracilis
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Below T7, fibers originating from the lower extremities
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Nucleus cuneatus
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Above T7, fibers originating from the upper extremeties
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Where do fibers from the nucleus cuneatus and gracilis terminate?
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Ventrolateral portion of the thalmus
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What are the receptors of nonhairy skin?
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Pacinian corpuscle
Merkels receptors Meissners corpuscle |
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What are the receptors of hairy skin?
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Pacinian corpuscle
Ruffini's corpuscle Tactile recpetors Hair follicle receptors |
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What are the rapidly adapting mechanoreceptors?
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Pacinian corpuscle
Meissner's corpuscle Hair follicle receptor |
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What are the slow adapting mechanoreceptors
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Tactile receptors
Merkel's receptors Ruffini's corpuscle |
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What is the difference between fast adapting and slow adapting mechanoreceptors?
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Brief, transient vs continuous stimulation
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What is the relationship between cutaneous receptive fields and spatial resolution?
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Smaller fields where spatial resolution is more acute.
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Describe the effect of lateral inhibition
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Inhibitory interneurons that cause the inhibition of neighboring central neurons, which sharpens the stimulus
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