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Carl Wedl
Carl Wedl (14 October 1815 – 21 September 1891) was an Austrian pathologist who was a native of Vienna. In 1841 he obtained his doctorate in Vienna, and subsequently practiced medicine in Ischl and Salzburg. In 1844 he took a scientific journey to France and England, afterwards returning to Vienna, where he performed histological research. With assistance from Karl Rokitansky (1804–1878), he received his habilitation in 1849. In 1853 he became an associate professor, and in 1872 was appointed professor of histology at the University of Vienna. Some of his well-known students were Heinrich Auspitz (1834–1885), Moritz Kaposi (1837–1902) and Salomon Stricker (1834–1898). Wedl is largely remembered for his work in microscopic pathology and histology. He made contributions in the fields of helminthology, neurology and ophthalmology, and was one of the first physicians to apply cell theory to pathology of the eye. The eponymous "Wedl cells" are named afte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Wedl
Carl Wedl (14 October 1815 – 21 September 1891) was an Austrian pathologist who was a native of Vienna. In 1841 he obtained his doctorate in Vienna, and subsequently practiced medicine in Ischl and Salzburg. In 1844 he took a scientific journey to France and England, afterwards returning to Vienna, where he performed histological research. With assistance from Karl Rokitansky (1804–1878), he received his habilitation in 1849. In 1853 he became an associate professor, and in 1872 was appointed professor of histology at the University of Vienna. Some of his well-known students were Heinrich Auspitz (1834–1885), Moritz Kaposi (1837–1902) and Salomon Stricker (1834–1898). Wedl is largely remembered for his work in microscopic pathology and histology. He made contributions in the fields of helminthology, neurology and ophthalmology, and was one of the first physicians to apply cell theory to pathology of the eye. The eponymous "Wedl cells" are named afte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crystalline Lens
The lens, or crystalline lens, is a transparent biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina. By changing shape, it functions to change the focal length of the eye so that it can focus on objects at various distances, thus allowing a sharp real image of the object of interest to be formed on the retina. This adjustment of the lens is known as '' accommodation'' (see also below). Accommodation is similar to the focusing of a photographic camera via movement of its lenses. The lens is flatter on its anterior side than on its posterior side. In humans, the refractive power of the lens in its natural environment is approximately 18 dioptres, roughly one-third of the eye's total power. Structure The lens is part of the anterior segment of the human eye. In front of the lens is the iris, which regulates the amount of light entering into the eye. The lens is suspended in place by the suspensory ligament of the lens, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trematode
Trematoda is a class of flatworms known as flukes. They are obligate internal parasites with a complex life cycle requiring at least two hosts. The intermediate host, in which asexual reproduction occurs, is usually a snail. The definitive host, where the flukes sexually reproduce, is a vertebrate. Infection by trematodes can cause disease in all five traditional vertebrate classes: mammals, birds, amphibians, reptiles, and fish. Etymology Trematodes are commonly referred to as flukes. This term can be traced back to the Old English name for flounder, and refers to the flattened, rhomboidal shape of the organisms. Taxonomy There are 18,000 to 24,000 known species of trematodes, divided into two subclasses — the Aspidogastrea and the Digenea. Aspidogastrea is the smaller subclass, comprising 61 species. These flukes mainly infect bivalves and bony fishes.https://www.biotaxa.org/Zootaxa/article/view/zootaxa.3918.3.2 Digenea — which comprise the majority of trematodes — ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taenia (genus)
''Taenia'' is the type genus of the Taeniidae family of tapeworms (a type of helminth). It includes some important parasites of livestock. Members of the genus are responsible for taeniasis and cysticercosis in humans, which are types of helminthiasis belonging to the group of neglected tropical diseases. More than 100 species are recorded. They are morphologically characterized by a ribbon-like body composed of a series of segments called proglottids; hence the name ''Taenia'' (Greek ταίνια, ''tainia'' meaning ribbon, bandage, or stripe). The anterior end of the body is the scolex. Some members of the genus ''Taenia'' have an armed scolex (hooks and/or spines located in the "head" region); of the two major human parasites, ''Taenia saginata'' has an unarmed scolex, while ''Taenia solium'' has an armed scolex. The proglottids have a central ovary, with a vitellarium (yolk gland) posterior to it. As in all cyclophyllid cestodes, a genital pore occurs on the side of the pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematode
The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-Parasitism, parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments. Less formally, they are categorized as Helminths, but are taxonomically classified along with Arthropod, arthropods, Tardigrade, tardigrades and other moulting animalia, animals in the clade Ecdysozoa, and unlike platyhelminthe, flatworms, have tubular digestion, digestive systems with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, which shows that the reduction has occurred within the nematode phylum. Nematode species can be difficult to distinguish from one another. Consequently, estimates of the number of nematode species described to date vary by author and may change rapidly over ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nervous System
In biology, the nervous system is the highly complex part of an animal that coordinates its actions and sensory information by transmitting signals to and from different parts of its body. The nervous system detects environmental changes that impact the body, then works in tandem with the endocrine system to respond to such events. Nervous tissue first arose in wormlike organisms about 550 to 600 million years ago. In vertebrates it consists of two main parts, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord. The PNS consists mainly of nerves, which are enclosed bundles of the long fibers or axons, that connect the CNS to every other part of the body. Nerves that transmit signals from the brain are called motor nerves or '' efferent'' nerves, while those nerves that transmit information from the body to the CNS are called sensory nerves or '' afferent''. Spinal nerves are mixed nerves that serve both fu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bactrian Camel
The Bactrian camel (''Camelus bactrianus''), also known as the Mongolian camel or domestic Bactrian camel, is a large even-toed ungulate native to the steppes of Central Asia. It has two humps on its back, in contrast to the single-humped dromedary. Its population of 2 million exists mainly in the domesticated form. Their name comes from the ancient historical region of Bactria. Domesticated Bactrian camels have served as pack animals in inner Asia since ancient times. With its tolerance for cold, drought, and high altitudes, it enabled the travel of caravans on the Silk Road. Bactrian camels, whether domesticated or feral, are a separate species from the wild Bactrian camel, which is the only truly wild (as opposed to feral) species of camelid in the Old World. Taxonomy The Bactrian camel shares the genus ''Camelus'' with the dromedary (''C. dromedarius'') and the wild Bactrian camel (''C. ferus''). The Bactrian camel belongs to the family Camelidae. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viktor Pietschmann
Viktor Pietschmann (27 October 1881 – 11 November 1956) was an Austrian ichthyologist at the Naturhistorisches Museum, Vienna Museum of Natural History. He was the curator of the fish collection from 1919 to 1946 and made collecting trips to the Barents Sea, Greenland, Mesopotamia, Armenia, Hawaii, Romania, and Poland. Pietschmann described many new fish, including several species of shark, and had more than 50 publications over his career. He served in the Austrian army in World War I, during which he was stationed in the Ottoman Empire. While there, Pietschmann Witnesses and testimonies of the Armenian genocide, witnessed the Armenian genocide and took many photographs of the deportees. He joined the National Socialist German Workers' Party (NSDAP) in 1932 and remained a member until the end of World War II. His zoological author abbreviation is Pietschmann. See also :Taxa named by Viktor Pietschmann, taxa named by Viktor Pietschmann, anthis query Early life Viktor Pietschm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bufoceratias Wedli
''Bufoceratias wedli'' is a deepsea anglerfish found in the mesopelagic The mesopelagic zone (Greek μέσον, middle), also known as the middle pelagic or twilight zone, is the part of the pelagic zone that lies between the photic epipelagic and the aphotic bathypelagic zones. It is defined by light, and begins at ... to bathypelagic regions of the ocean, ranging from a depth of 300 to 1750 m. It is a double angler with two lures on its back, the anterior lure being the smaller. Taxonomy The species was previously classified as ''Phrynichthys wedli'', then ''Paroneirodes wedli'', before being renamed shortly after as ''Bufoceratias wedli''. External links Australian museum: ''B. wedli'' Diceratiidae Fish described in 1926 Taxa named by Viktor Pietschmann {{Lophiiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michele Stossich
Michele Stossich (10 August 1857 – 7 February 1906) was an Italian-Austrian zoologist and helminthologist born in Trieste. He was the son of biologist Adolf Stossich (1824-1900). Stossich studied at the University of Innsbruck and Vienna Polytechnic, earning his teaching certificate in 1878. Afterwards, he was an instructor in Fiume (1878-1882) and Trieste. In 1902 he described Cyclocoelidae, a family of parasitic flatworms. During his career he classified a number of helminthological species, and has several zoological species named after him. He was a member of the ''Società adriatica di scienze naturali'' (Adriatic Society of Natural Sciences), the ''Società agraria di Trieste'' (Agricultural Society of Trieste) and a corresponding member of the Museum of Rovereto and the Royal Academy of Sciences Modena Modena (, , ; egl, label=Emilian language#Dialects, Modenese, Mòdna ; ett, Mutna; la, Mutina) is a city and ''comune'' (municipality) on the south side of the Po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Spencer Cobbold
Thomas Spencer Cobbold FRS (26 May 182810 March 1886) was an English biologist. Life He was born at Ipswich, the third son of Rev. Richard Cobbold, author of the ''History of Margaret Catchpole''. After graduating in medicine at the University of Edinburgh in 1851, he was appointed lecturer on botany at St Mary's Hospital, London in 1857, and also on zoology and comparative anatomy at Middlesex Hospital in 1861. He was elected a Fellow of the Royal Society in June, 1864. From 1868 he acted as Swiney Lecturer on geology at the British Museum until 1873, when he became professor of botany at the Royal Veterinary College, afterwards filling a chair of helminthology which was specially created for him at that institution. He was president of the Quekett Microscopical Club The Quekett Microscopical Club is a learned society for the promotion of microscopy. Its members come from all over the world, and include both amateur and professional microscopists. It is a registered cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
