Term
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Definition
| threshold reached, an action potential is generated & sensory impulse is propagated |
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Term
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Definition
| brain becomes aware of sensory impulses |
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Term
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Definition
| brain interprets sensory impulses |
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Term
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Definition
| brain projects sensation back to its apparent source |
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Term
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Definition
| level of receptor doesn't reach threshold as often |
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Term
| characteristics of general senses |
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Definition
| ALL over body, NOT taste, smell, hearing |
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Term
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Definition
| located in stratum spinosum, makes you itch |
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Term
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Definition
| in dermis, light touch, feel insect crawling |
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Term
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Definition
| all over, even in organs, feel pressure |
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Term
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Definition
| most sensitive to above 77 unresponsive to above 113 |
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Term
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Definition
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Term
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Definition
| they protect because stimulated when tissues are damaged |
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Term
| sensations of visceral pain |
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Definition
| when visceral tissues are subject to more widespread stimulation a strong pain sensation, results from mechanoreceptor stimulation |
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Term
| sensations of reeferred pain |
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Definition
| visceral pain feels as if its coming from some place else |
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Term
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Definition
| thin, mylenated, conduct impulses quickly, associated with sharp pain originated in local area |
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Term
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Definition
| unmylenated, slow impulses, cause dull aching sensation thats wide spread |
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Term
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Definition
| mechanoreceptors that tell about body position & length/tension of muscles |
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Term
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Definition
| in relaxed muscles, register the degree of stretch & initiate slight contraction if stretch excessive |
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Term
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Definition
| measure degree of tension when muscle contracted & initiate relaxation if tension excessive |
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Term
| visceral senses characteristics |
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Definition
| sensory receptors are part of large, complex sensory organs in the head |
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Term
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Definition
| nerves exposed to outside |
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Term
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Definition
| house olefactory cells, surrounds them with columnar epithelium |
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Term
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Definition
| project into nasal cavity, sensitive, cells respond to chem stimuli. require membrane receptors to do so |
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