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Individual differences |
Methods | Statistics | Clinical | Educational | Industrial | Professional items | World psychology |
Biological: Behavioural genetics · Evolutionary psychology · Neuroanatomy · Neurochemistry · Neuroendocrinology · Neuroscience · Psychoneuroimmunology · Physiological Psychology · Psychopharmacology (Index, Outline)
|Nerve ending of Ruffini.|
|Latin||corpusculum sensorium fusiforme|
|Gray's||subject #233 1061|
Ruffini corpuscles are enlarged dendritic endings with elongated capsules.
This spindle-shaped receptor is sensitive to skin stretch, and contributes to the kinesthetic sense of and control of finger position and movement. 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 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.
Footnotes and referencesEdit
- ↑ 1.0 1.1 "8" Ganong's Review of Medical Physiology, 23rd, TATA McGraw-Hill Lange. URL accessed 9 June 2012.
- ↑ Molnár Z, Brown RE., 2010. Insights into the life and work of Sir Charles Sherrington. Nat Rev Neurosci. 11(6):429-36
- ↑ Mountcastle, Vernon C. (2005). The Sensory Hand: Neural Mechanisms of Somatic Sensation, Harvard University Press.
- ↑ Arthur c. Guyton; John E. Hall. "47" Guyton & Hall Pocket Companion to Textbook of Medical Physiology, 10. URL accessed 9 June 2012.
- ↑ Hamilton, Nancy (2008). Kinesiology: Scientific Basis of Human Motion, 76–7, McGraw-Hill.
- Paré M, Behets C, Cornu O (2003). Paucity of presumptive ruffini corpuscles in the index finger pad of humans.. J Comp Neurol 456 (3): 260–6.
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