|
Ruffini Ending
The bulbous corpuscle, Ruffini ending or Ruffini corpuscle is a slowly adapting mechanoreceptor A mechanoreceptor, also called mechanoceptor, is a sensory receptor that responds to mechanical pressure or distortion. Mechanoreceptors are located on sensory neurons that convert mechanical pressure into action potential, electrical signals tha ... located in the cutaneous tissue between the dermal papillae and the hypodermis. It is named after Angelo Ruffini. Structure Ruffini corpuscles are enlarged dendritic endings with elongated capsules. Function This spindle-shaped receptor is sensitive to skin stretch, and contributes to the kinesthetic sense of and control of finger position and movement. 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. Ruffini corpuscles respond to sustained pressure and show very little adaptation. Ruffinian endings are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skin
Skin is the layer of usually soft, flexible outer tissue covering the body of a vertebrate animal, with three main functions: protection, regulation, and sensation. Other animal coverings, such as the arthropod exoskeleton, have different developmental origin, structure and chemical composition. The adjective cutaneous means "of the skin" (from Latin ''cutis'' 'skin'). In mammals, the skin is an organ of the integumentary system made up of multiple layers of ectodermal tissue and guards the underlying muscles, bones, ligaments, and internal organs. Skin of a different nature exists in amphibians, reptiles, and birds. Skin (including cutaneous and subcutaneous tissues) plays crucial roles in formation, structure, and function of extraskeletal apparatus such as horns of bovids (e.g., cattle) and rhinos, cervids' antlers, giraffids' ossicones, armadillos' osteoderm, and os penis/ os clitoris. All mammals have some hair on their skin, even marine mammals like whales, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mechanoreceptor
A mechanoreceptor, also called mechanoceptor, is a sensory receptor that responds to mechanical pressure or distortion. Mechanoreceptors are located on sensory neurons that convert mechanical pressure into action potential, electrical signals that, in animals, are sent to the central nervous system. Vertebrate mechanoreceptors Cutaneous mechanoreceptors Cutaneous mechanoreceptors respond to mechanical stimuli that result from physical interaction, including pressure and vibration. They are located in the skin, like other cutaneous receptors. They are all innervated by Aβ fibers, except the mechanorecepting free nerve endings, which are innervated by A delta fiber, Aδ fibers. Cutaneous mechanoreceptors can be categorized by what kind of sensation they perceive, by the rate of adaptation, and by morphology. Furthermore, each has a different receptive field. By sensation * The Slowly Adapting type 1 (SA1) mechanoreceptor, with the Merkel corpuscle end-organ (also known as M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skin
Skin is the layer of usually soft, flexible outer tissue covering the body of a vertebrate animal, with three main functions: protection, regulation, and sensation. Other animal coverings, such as the arthropod exoskeleton, have different developmental origin, structure and chemical composition. The adjective cutaneous means "of the skin" (from Latin ''cutis'' 'skin'). In mammals, the skin is an organ of the integumentary system made up of multiple layers of ectodermal tissue and guards the underlying muscles, bones, ligaments, and internal organs. Skin of a different nature exists in amphibians, reptiles, and birds. Skin (including cutaneous and subcutaneous tissues) plays crucial roles in formation, structure, and function of extraskeletal apparatus such as horns of bovids (e.g., cattle) and rhinos, cervids' antlers, giraffids' ossicones, armadillos' osteoderm, and os penis/ os clitoris. All mammals have some hair on their skin, even marine mammals like whales, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angelo Ruffini
Angelo Ruffini (Pretare of Arquata del Tronto; 1864–1929) was an Italian histologist and embryologist. He studied medicine at the University of Bologna, where beginning in 1894 he taught classes in histology. In 1903 he attained the chair of embryology at the University of Siena. He was the first to describe small encapsulated nerve endings (mechanoreceptors) which were to become known as Ruffini corpuscles. He used a gold chloride stain on his microscope slides in order to view the tiny corpuscles. Ruffini was a pioneer in the study of amphibian gastrulation Gastrulation is the stage in the early embryonic development of most animals, during which the blastula (a single-layered hollow sphere of cells), or in mammals, the blastocyst, is reorganized into a two-layered or three-layered embryo known as ..., providing a comprehensive and detailed description on the formation of "bottle cells". He published these findings in a book titled ''Fisiogenia'' (1925). Relationsh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruffini Corpuscle By Angelo Ruffini
Ruffini is an Italian surname. Notable people with the surname include: *Angelo Ruffini (1864–1929), Italian histologist and embryologist * Attilio Ruffini (1924–2011), Italian politician * Ernesto Ruffini (1888–1967), Archbishop of Palermo * Frederick Ernst Ruffini (1851-1885), American architect * Giovanni Ruffini (1807–1881), Italian poet and librettist * Giulano Ruffini (born 1945), French art collector *Giuseppe or Joseph Ruffini (1690–1749), Italian-Austrian painter * Luca Ruffini (born 1997), Italian footballer * Oscar Ruffini (1858-1957), American architect *Paolo Ruffini (mathematician) (1765–1822), Italian mathematician and philosopher *Paolo Ruffini (actor) (born 1978), Italian actor and presenter * Patrick Ruffini, political pollster and strategist * Sandro Ruffini (1889–1954), Italian actor and voice actor * Remo Ruffini (born 1942), French astrophysicist *Remo Ruffini (businessman) (born 1961), Italian billionaire businessman * Silvia Ruffini (1475–1561 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
