Ruffini corpuscles
Ruffini corpuscles are among the mechanoreceptors and were named after the Italian anatomist and neuropathologist Angelo Ruffini (1864–1929), who was the first to make them visible by means of a gold coloring he developed. They are slowly adapting stretch receptors that occur in the skin , the periodontal membrane of the teeth and in the joint capsules . In the skin, they lie in the reticular stratum of the dermis and respond to pressure and horizontal stretching. The Ruffini corpuscles of the joint capsule register the position of the joints and their speed of deflection.
The Ruffini corpuscle has the shape of an open cylinder flattened towards the ends . Collagen fiber bundles enter through the openings on one side and exit on the other. The ends of the nerve fibers are embedded spirally between the collagen fiber bundles . The supplying fiber bundle ( afference ) is myelinated and about 5 µm thick.
Web links
Individual evidence
- ^ Heinz-Peter Schmiedebach : Ruffini, Angelo. In: Werner E. Gerabek , Bernhard D. Haage, Gundolf Keil , Wolfgang Wegner (eds.): Enzyklopädie Medizingeschichte. De Gruyter, Berlin / New York 2005, ISBN 3-11-015714-4 , p. 1274.
- ^ Holger Münzel: Max von Frey. Life and work with special consideration of his sensory-physiological research. (= Würzburg medical historical research. Volume 53). Königshausen & Neumann, Würzburg 1992, ISBN 3-88479-803-0 , p. 199.
- ↑ a b Wolfgang Kühnel: Pocket Atlas of Histology . 13th edition. Thieme, Stuttgart 2014, ISBN 978-3-13-151533-9 , pp. 456 .
- ↑ Jan C. Behrends: Physiology . Thieme, Stuttgart 2010, ISBN 978-3-13-138411-9 , p. 597 .