Bulbous corpuscle
| Ruffini ending | |
|---|---|
 |
|
| Nerve ending of Ruffini. | |
| Latin | corpusculum sensorium fusiforme |
| Gray's | subject #233 1061 |
| Code | TH H3.11.06.0.00017 TE E05.17.1.0.2.0.15 |
The Bulbous corpuscle or Ruffini ending or Ruffini corpuscle is a slowly adapting mechanoreceptor found in the subcutaneous tissue of humans. It is named after Angelo Ruffini.
Contents |
Structure [edit]
Ruffini corpuscles are enlarged dendritic endings with elongated capsules.[1]
Function [edit]
This spindle-shaped receptor is sensitive to skin stretch, and contributes to the kinesthetic sense of and control of finger position and movement.[3] It is believed to be useful for monitoring slippage of objects along the surface of the skin, allowing modulation of grip on an object.
Ruffini corpuscles respond to sustained pressure[1] and show very little adaptation.[4]
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.[5]
Footnotes and references [edit]
- ^ a b "8". Ganong's Review of Medical Physiology (23rd ed.). TATA McGraw-Hill Lange. p. 150. ISBN 978-0-07-067722-7.
- ^ 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. p. 34.
- ^ Arthur c. Guyton; John E. Hall. "47". Guyton & Hall Pocket Companion to Textbook of Medical Physiology (10 ed.). p. 362. ISBN 81-8147-057-5.
- ^ Hamilton, Nancy (2008). Kinesiology: Scientific Basis of Human Motion. McGraw-Hill. pp. 76–7.
External links [edit]
- 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. doi:10.1002/cne.10519. PMID 12528190.
|
|||||||||||||
 |
This anatomy article is a stub. You can help Wikipedia by expanding it. |
