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Definition
| an area w/i which a stimulus can excite a cell or alter the firing of the neuron associated with it |
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Definition
| ability to discern detailed features of a stimulus |
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Definition
| swelling, hyperemia, turgor |
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| Physiological irritability |
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Definition
| fasciculations, also experienced as twitches |
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Definition
| sensitive to PHYSICAL distortion; bending, stretching, vibration & pressure |
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| signal that the body is being damaged or is at risk of being damaged; pain receptors |
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| Receptors that are sensitive to extreme hot or cold |
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| measure length and tendon and limb position so the body knows where it is in space, how fast it is going and what direction it is going |
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Definition
| detect deep pressure & rapid vibration; LARGE receptive fields with sensitive centers (looks like onion in histology slide) |
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Term
| Mechanoreceptors include... |
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Definition
| Pacinian corpuscle; Meissner's Corpuscles; Merkel's Disc; hair root plexus; Ruffini's endings or Ruffini Corpuscle; Krause's End Bulbs |
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Term
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Definition
| 1/10th size of Pacinian Corpuscles; Sensitive to Light Touch, help create adaptation; Small Receptive Fields; FOUND in large amounts on: fingertips, lips, tongue, face, soles of feet |
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Definition
| Detect sustained pressure and texture, Small Receptive Fields; found in greatest number on finger pads; tactile discrimination; surface structure, moisture |
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Definition
| known for detecting light touch |
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Term
| Ruffini's endings-spindle-shaped |
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Definition
| sensitive to sustained pressure and skin stretch |
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Definition
| found in border regions of dry skin and mucous membranes and participate in crude touch |
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Definition
| free, unbranching myelinated nerve endings; signal that body is being damaged/risk of damage: 4 CATEGORIES: mechanical (strong pressure from sharp objects), Thermal (extreme temp), Chemically sensitive (pH); Polymodal |
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Definition
| free, branching myelineated nerve endings, signal that body is being damaged or is at risk of being damaged, |
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Definition
| sensory receptors, eg mechanoreceptors |
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| Dorsal Columnar Medial Lemniscal Pathway |
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Definition
| carries information about touch and vibration from the skin and proprioceptive signals from the limbs |
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Definition
| carries information about pain and temperature, crude or non-discriminative touch |
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Definition
| distorted human figure used to represent the relative area of cerebral cortex devoted to sensation of corresponding skin areas |
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Definition
| distorted human figure used to represent the relative area of cerebral cortex devoted to movement of corresponding motor areas |
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Term
| The human hand can sense what? |
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Definition
| 2 pt discrimination, texture, contour -structure, friction-moisture, compliance, stereognosis, temperature |
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Term
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Definition
| muscle spindles, golgi tendon organs, joint/kinesthetic receptors; measure muscle length and tendon and limb position, tells us where our bodies are in space, if they are moving, how fast/what direction |
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Term
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Definition
| Reception/Detecting; Transmission; Interpretation; Amplification |
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Definition
| use the exteroceptors and proprioceptors to discover nature of object |
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Definition
| info gathered is relayed to the peripheral and CNS in the brain |
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Definition
| Translate palpatory observations into meaningful knowledge about anatomic, physiologic or pathologic states |
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Definition
| focus and elimination of distractions |
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Definition
| used for perceiving changes in temp/texture of skin, normal tissue resistance |
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Definition
| aid in differentiating dysfunction in regions of increased muscular and ligamentous tension and may aid in testing mobility |
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Term
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Definition
| mechanoreceptors, thermoreceptors, nociceptors |
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Term
| Where are exteroceptors found |
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Definition
| touch receptors: found in finger pads; Heat receptors: dorsal of hand; Vibration: palmar surface of MP joints; Sterogenosis: center of palm |
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Term
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Definition
| meissner's corpuscle, merkel's disc, hair-root plexus |
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Term
| deep pressure is sensed by... |
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Definition
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Definition
| thought to be Krause's end-bulb and Ruffini's endings |
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Term
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Definition
| with continuous pressure the frequency of the impulses slows then stops, this is useful because it prevents the nervous system from being bombarded with information about insignificant matters like touch and pressure of our clothing |
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