Fatti in breve Corpuscolo di Ruffini, Anatomia del Gray ...
Chiudi
Il corpuscolo di Ruffini è una classe di meccanorecettori ad adattamento lento. Si pensa che siano presenti solo nelle zone naturalmente glabre del derma (dorso della mano, pianta del piede, labbra, piccole labbra e glande), e nell'ipoderma umano. Il nome deriva dal medico italiano Angelo Ruffini.
Function
This spindle-shaped receptor is sensitive to skin stretch, and contributes to the kinesthetic sense of and control of finger position and movement.[1] It is believed to be useful for monitoring slippage of objects along the surface of the skin, allowing modulation of grip on an object.
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 degrees, as well as continuous pressure states.They also act as a 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.[2]
Vernon C. Mountcastle, The Sensory Hand: Neural Mechanisms of Somatic Sensation, Harvard University Press, 2005, p. 34.
Nancy Hamilton, Kinesiology: Scientific Basis of Human Motion, McGraw-Hill, 2008, pp. 76–7.
External links
- Paré M, Behets C, Cornu O, Paucity of presumptive ruffini corpuscles in the index finger pad of humans., in J Comp Neurol, vol. 456, n. 3, 2003, pp. 260–6, DOI:10.1002/cne.10519, PMID 12528190.
[[Category:Sensory receptors]]
[[cs:Ruffiniho tělísko]]
[[de:Ruffini-Körperchen]]
[[es:Corpúsculos de Ruffini]]
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[[gl:Corpúsculo de Ruffini]]
[[he:גופיף רפיני]]
[[pl:Ciałka Ruffiniego]]
[[pt:Corpúsculo de Ruffini]]