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Skin mechanoreceptor From Wikipedia, the free encyclopedia
The bulbous corpuscle, Ruffini ending or Ruffini corpuscle is a slowly adapting mechanoreceptor located in the cutaneous tissue between the dermal papillae and the hypodermis. It is named after Angelo Ruffini.
Ruffini ending | |
---|---|
Details | |
Part of | Skin |
Function | Mechanoreceptor |
Identifiers | |
Latin | corpusculum sensorium fusiforme |
TH | H3.11.06.0.00017 |
TE | corpuscle_by_E5.17.1.0.2.0.15 E5.17.1.0.2.0.15 |
FMA | 83602 |
Anatomical terminology |
Ruffini corpuscles are enlarged dendritic endings with elongated capsules.[1]
This spindle-shaped receptor is sensitive to skin stretch, and contributes to the kinesthetic sense of and control of finger position and movement.[3] They are at the highest density around the fingernails where they act in monitoring slippage of objects along the surface of the skin, allowing modulation of grip on an object. [citation needed]
Ruffini corpuscles respond to sustained pressure[4] and show very little adaptation.[5]
Ruffinian endings are located in the deep layers of the skin, and register mechanical deformation within joints, more specifically angle change, with a specificity of up to 2.75 degrees, as well as continuous pressure states. They also act as thermoreceptors that respond for a long time, so in case of deep burn there will be no pain, as these receptors will be burned off.[6]
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