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16 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Pacinian Corpuscle |
vibration |
Sensory receptor in the skin |
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Meissner’s Corpuscle |
Touch |
Sensory receptor in the skin |
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Merkel’s discs |
Touch |
Sensory receptor in the skin |
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Ruffini’s ending |
Stretch |
Sensory receptor in the skin |
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Epidermis |
The outermost layer of skin, over the dermis |
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Dermis |
The middle layer of skin, between the epidermis and hypodermis |
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Hypodermis |
The innermost layer of skin, under the dermis. Also called subcutaneous tissue |
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Sensory cortex |
The region of cortex that receives most of the information about that modality from the thalamus or secondary sensory neurons |
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Changes to sensory cortex resulting from exposure |
The amount of sensory cortex dedicated to a given body part can change based on repeated exposure or lack of stimulation |
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Phantom limb pain |
Continued perception of chronic pain coming from a missing limb |
A neuropathic pain due to inappropriate signaling of pain by neurons |
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Free nerve endings |
An axon that terminates in the skin without any specialized cell associated with it that detects pain/changes in temperature |
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Transient Receptor Potential Channels (TRPCs) |
Found on nociceptors; seven sub-families 3 types: thermal, mechanical, chemical |
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TrpV1 |
Transient Receptor Potential cation channel subfamily V member 1. Thermoreceptor, Nociceptor |
In tongue, sensitive to capsaicin found in peppers-interpreted as heat |
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Sensory fibers |
A-alpha; A-beta; A-delta; C |
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Ascending pain pathway |
Info enters through the dorsal root and synapses on neurons in the dorsal horn. Pain fibers release glutamate and substance P in spinal cord. Dorsal horn cells send info across midline up to thalamus |
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Opioid receptors and analgesia |
3 classes: Mu, Delta, Kappa 3 classes of opioid neuropeptides: beta-endorphins, enkephalins, & dynorphins |
Block calcium channels / open potassium channels |
