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- pain receptors
- free nerve endings
- sensitive to: extremes of temperature, mechanical damage, and dissolved chemicals
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- temperature receptors
- free nerve endings located in the dermis, skeletal muscles, liver, and hypothalamus
- very active when the temperature is changing, but quickly adapt to stable temperatures
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- sensitive to stretching, compression, and twisting
- Three types: 1-tactile (touch) 2- baroreceptors (pressure) 3- proprioceptors (position)
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- provide sensations of touch, pressure, and vibration
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- pressure receptors
- helps regulate various autonomic activities such as: digestion, urination, blood pressure monitoring, respiration, and defecation
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- position receptors
- monitor position in space
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- chemical receptors
- respond to water-soluble and lipid-soluble substances (ex: detect changes in ph, O2, and CO2 in blood or CSF)
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Definition
- the sense of smell
- olfactory nerve firers extend out of the olfactory bulb, which sits on the cribriform plate, and down into the olfactory epithelium to detect smell
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