|
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 for to view the tiny corpuscles. Ruffini was a pioneer in the study of amphibian gastrulation, providing a comprehensive and detailed description on the formation of "bottle cells". He published these findings in a book titled ''Fisiogenia'' (1925). Relationship with Sir Charles Sherrington Between 1896 and 1903, Ruffini corresponded regularly with Sir Charles Sherrington Sir Charles Scott Sherrington (27 November 1857 – 4 March 1952) was an eminent English neurophysiologist. His experimental research ... [...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 for to view the tiny corpuscles. Ruffini was a pioneer in the study of amphibian gastrulation, providing a comprehensive and detailed description on the formation of "bottle cells". He published these findings in a book titled ''Fisiogenia'' (1925). Relationship with Sir Charles Sherrington Between 1896 and 1903, Ruffini corresponded regularly with Sir Charles Sherrington Sir Charles Scott Sherrington (27 November 1857 – 4 March 1952) was an eminent English neurophysiologist. His experimental research ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibian
Amphibians are tetrapod, four-limbed and ectothermic vertebrates of the Class (biology), class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial animal, terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Embryologists
Embryology (from Ancient Greek, Greek ἔμβρυον, ''embryon'', "the unborn, embryo"; and -λογία, ''-logy, -logia'') is the branch of animal biology that studies the Prenatal development (biology), prenatal development of gametes (sex cells), fertilization, and development of embryos and fetuses. Additionally, embryology encompasses the study of congenital disorders that occur before birth, known as teratology. Early embryology was proposed by Marcello Malpighi, and known as preformationism, the theory that organisms develop from pre-existing miniature versions of themselves. Aristotle proposed the theory that is now accepted, Epigenesis (biology), epigenesis. Epigenesis (biology), Epigenesis is the idea that organisms develop from seed or egg in a sequence of steps. Modern embryology, developed from the work of Karl Ernst von Baer, though accurate observations had been made in Italy by anatomists such as Aldrovandi and Leonardo da Vinci in the Renaissance. Comparativ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italian Anatomists
Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, an ethnic group or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance language *** Regional Italian, regional variants of the Italian language ** Languages of Italy, languages and dialects spoken in Italy ** Italian culture, cultural features of Italy ** Italian cuisine, traditional foods ** Folklore of Italy, the folklore and urban legends of Italy ** Mythology of Italy, traditional religion and beliefs Other uses * Italian dressing, a vinaigrette-type salad dressing or marinade * Italian or Italian-A, alternative names for the Ping-Pong virus, an extinct computer virus See also * * * Italia (other) * Italic (other) * Italo (other) * The Italian (other) * Italian people (other) Italian people may refer to: * in terms of ethnicity: all ethnic Italians, in and outside of Italy * in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1929 Deaths
Nineteen or 19 may refer to: * 19 (number), the natural number following 18 and preceding 20 * one of the years 19 BC, AD 19, 1919, 2019 Films * ''19'' (film), a 2001 Japanese film * ''Nineteen'' (film), a 1987 science fiction film Music * 19 (band), a Japanese pop music duo Albums * ''19'' (Adele album), 2008 * ''19'', a 2003 album by Alsou * ''19'', a 2006 album by Evan Yo * ''19'', a 2018 album by MHD * ''19'', one half of the double album ''63/19'' by Kool A.D. * ''Number Nineteen'', a 1971 album by American jazz pianist Mal Waldron * ''XIX'' (EP), a 2019 EP by 1the9 Songs * "19" (song), a 1985 song by British musician Paul Hardcastle. * "Nineteen", a song by Bad4Good from the 1992 album '' Refugee'' * "Nineteen", a song by Karma to Burn from the 2001 album ''Almost Heathen''. * "Nineteen" (song), a 2007 song by American singer Billy Ray Cyrus. * "Nineteen", a song by Tegan and Sara from the 2007 album '' The Con''. * "XIX" (song), a 2014 song by Slipk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1864 Births
Events January–March * January 13 – American songwriter Stephen Foster ("Oh! Susanna", "Old Folks at Home") dies aged 37 in New York City, leaving a scrap of paper reading "Dear friends and gentle hearts". His parlor song " Beautiful Dreamer" is published in March. * January 16 – Denmark rejects an Austrian-Prussian ultimatum to repeal the Danish Constitution, which says that Schleswig-Holstein is part of Denmark. * January 21 – New Zealand Wars: The Tauranga campaign begins. * February – John Wisden publishes '' The Cricketer's Almanack for the year 1864'' in England; it will go on to become the major annual cricket reference publication. * February 1 – Danish-Prussian War (Second Schleswig War): 57,000 Austrian and Prussian troops cross the Eider River into Denmark. * February 15 – Heineken brewery founded in Netherlands. * February 17 – American Civil War: The tiny Confederate hand-propelled submarine ''H. L. Hunl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruffini Corpuscle
The Bulbous corpuscle or Ruffini ending or Ruffini corpuscle is a slowly adapting mechanoreceptor located in the skin, 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 located in the deep layers of the skin, and register mechanical deformation within joints, more specifically angle change, with a specificity of up to 2.75 degrees, as well as continuous pressure states. They also act as thermoreceptors that respond ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sir Charles Sherrington
Sir Charles Scott Sherrington (27 November 1857 – 4 March 1952) was an eminent English neurophysiologist. His experimental research established many aspects of contemporary neuroscience, including the concept of the spinal reflex as a system involving connected neurons (the "neuron doctrine"), and the ways in which signal transmission between neurons can be potentiated or depotentiated. Sherrington himself coined the word "synapse" to define the connection between two neurons. His book ''The Integrative Action of the Nervous System'' (1906) is a synthesis of this work, in recognition of which he was awarded the Nobel Prize in Physiology or Medicine in 1932 (along with Edgar Adrian). In addition to his work in physiology, Sherrington did research in histology, bacteriology, and pathology. He was president of the Royal Society in the early 1920s. Biography Early years and education Official biographies claim Charles Scott Sherrington was born in Islington, London, England, o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruffini Corpuscle By Angelo Ruffini
Ruffini is an Italian surname. Notable people with the surname include: * Alessandro "Sandro" Ruffini (1889–1954), Italian actor and voice actor *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 (1765–1822), Italian mathematician and philosopher *Paolo Ruffini (actor) (born 1978), Italian actor and presenter *Patrick Ruffini, Republican Party pollster and political strategist *Remo Ruffini (businessman) (born 1961), Italian billionaire businessman * Silvia Ruffini (1475–1561), Italian noble woman and mistress of C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 multilayered structure known as the gastrula. Before gastrulation, the embryo is a continuous epithelial sheet of cells; by the end of gastrulation, the embryo has begun differentiation to establish distinct cell lineages, set up the basic axes of the body (e.g. dorsal-ventral, anterior-posterior), and internalized one or more cell types including the prospective gut. In triploblastic organisms, the gastrula is trilaminar (three-layered). These three germ layers are the ectoderm (outer layer), mesoderm (middle layer), and endoderm (inner layer).Mundlos 2009p. 422/ref>McGeady, 2004: p. 34 In diploblastic organisms, such as Cnidaria and Ctenophora, the gastrula has only ectoderm and endoderm. The two layers are also sometimes referred to as the ''hypoblast'' and ''epiblast''. Sponges ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microscope Slide
A microscope slide is a thin flat piece of glass, typically 75 by 26 mm (3 by 1 inches) and about 1 mm thick, used to hold objects for examination under a microscope. Typically the object is mounted (secured) on the slide, and then both are inserted together in the microscope for viewing. This arrangement allows several slide-mounted objects to be quickly inserted and removed from the microscope, labeled, transported, and stored in appropriate slide cases or folders etc. Microscope slides are often used together with a cover slip or cover glass, a smaller and thinner sheet of glass that is placed over the specimen. Slides are held in place on the microscope's stage by slide clips, slide clamps or a cross-table which is used to achieve precise, remote movement of the slide upon the microscope's stage (such as in an automated/computer operated system, or where touching the slide with fingers is inappropriate either due to the risk of contamination or lack of precision ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arquata Del Tronto
Arquata del Tronto is a ''comune'' (municipality) in the Province of Ascoli Piceno in the Marche region of Italy, located about from Ancona. It is the only European municipality located partly within two natural parks: Gran Sasso national park and Cyblings mountains natural park. History The ancient history of the town is uncertain, though some scholars have assigned it to ''Surpicanum'' visible in the Peutingerian Table, a centre of the Piceni or the Sabines whose location is still debated. Another theory has it founded by the Romans as a road station on the Via Salaria. The first mention of Arquata dates to the Middle Ages (6th century), when a stronghold existed here. In 1255 it was conquered by Ascoli Piceno, under which it remained (with a certain autonomy) until the late 14th century. In 1397, during the war between Ascoli and Norcia, it was a stronghold of the latter and the Ghibellines from Ascoli. Queen Joan II of Naples lived in Arquata from 1420 to 1435. After being c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.png "Click for more on -> Amphibian")
