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Hertwig
Hertwig is a German surname. Notable people with the surname include: *Benjamin Hertwig, Canadian poet * Craig Hertwig (1952–2012), American football player * Michael Hertwig (born 1960), German football player and manager *Oscar Hertwig (1849–1922), German zoologist *Paula Hertwig Paula Hertwig (11 October 1889 – 31 March 1983) was a German biologist and politician. Her research focused on radiation health effects. Hertwig was the first woman to habilitate at the then Friedrich-Wilhelms-Universität Berlin (now Humboldt ... (1889–1983), German biologist, politician * Richard Hertwig (1850–1937), German zoologist See also * Hertwig's sheath, a proliferation of epithelial cells {{surname German-language surnames ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oscar Hertwig
Oscar Hertwig (21 April 1849 in Friedberg, Hesse, Friedberg – 25 October 1922 in Berlin) was a German embryologist and zoologist known for his research in developmental biology and evolution. Hertwig is credited as the first man to observe sexual reproduction by looking at the cells of sea urchins under the microscope. Biography Hertwig was the elder brother of zoologist-professor Richard Hertwig (1850–1937). The Hertwig brothers were the most eminent scholars of Ernst Haeckel (and Carl Gegenbaur) from the University of Jena. They were independent of Haeckel's philosophical speculations but took his ideas in a positive way to widen their concepts in zoology. Initially, between 1879 and 1883, they performed embryological studies, especially on the theory of the coelom (1881), the fluid-filled body cavity. These problems were based on the phylogenetic theorems of Haeckel, i.e. the biogenic theory (German = biogenetisches Grundgesetz), and the "gastraea theory". Within 10 yea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Hertwig
Richard Wilhelm Karl Theodor Ritter von Hertwig (23 September 1850 in Friedberg, Hesse – 3 October 1937 in Schlederloh, Bavaria), also Richard Hertwig or Richard von Hertwig, was a German zoologist and professor of 50 years, notable as the first to describe zygote formation as the fusing of spermatozoa inside the membrane of an egg cell during fertilization. "Richard von Hertwig – Wikipedia" (German), German Wikipedia, 2006-10-29, de.wikipedia.org webpage: GermanWP-Richard_von_Hertwig. Richard Hertwig was the younger brother of Oscar Hertwig, who also analyzed zygote formation. The two Hertwig brothers worked together until 1883 (more at: Oscar Hertwig). The Hertwig brothers were the most eminent scholars of Ernst Haeckel (and Carl Gegenbaur), each brother becoming a long-term professor in Germany. They were independent of Haeckel's philosophical speculations but took his ideas in a positive way to widen their concepts in zoology. Initially, between 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paula Hertwig
Paula Hertwig (11 October 1889 – 31 March 1983) was a German biologist and politician. Her research focused on radiation health effects. Hertwig was the first woman to habilitate at the then Friedrich-Wilhelms-Universität Berlin (now Humboldt University of Berlin) in the field of zoology. She was also the first biologist at a German university. Hertwig is one of the founders of radiation genetics alongside Emmy Stein. Hertwig-Weyers syndrome, which describes oligodactyly in humans as a result of radiation exposure, is named after her and her colleague, Helmut Weyers. Biography Paula Julie Elisabeth Hertwig was born in Berlin on 11 October 1889. She was the daughter of Oscar Hertwig, a university professor; sister of the anatomist, Günther Hertwig; and niece of the zoologist, Richard Hertwig. She graduated from high school in 1908, at the Realgymnasium. She studied zoology, botany, and chemistry at the University of Berlin, medical PhD. After that she was an assistant at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Craig Hertwig
John Craig "Sky" Hertwig (January 15, 1952 – May 30, 2012) was an American football offensive tackle who played three seasons with the Detroit Lions of the National Football League (NFL). He was drafted by the Lions in the fourth round of the 1975 NFL Draft. He played college football at the University of Georgia and attended Mark Smith High School in Macon, Georgia. Hertwig was also a member of the Buffalo Bills. He died of heart failure Heart failure (HF), also known as congestive heart failure (CHF), is a syndrome, a group of signs and symptoms caused by an impairment of the heart's blood pumping function. Symptoms typically include shortness of breath, excessive fatigue, a ... on May 30, 2012 in Athens, Georgia. He owned a bar for 32 years in Athens up to his death. Hertwig was nicknamed "Sky" in reference to his height. References External linksJust Sports Stats {{DEFAULTSORT:Hertwig, Craig 1952 births 2012 deaths Players of American football from Columbus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michael Hertwig
Michael Hertwig (born 17 November 1960 in Offenburg) is a former German football player and manager. Hertwig, formerly on the books of FC Bayern Munich, made ten appearances for Karlsruher SC during the 1984–85 Bundesliga campaign and played 25 games the following season for Tennis Borussia Berlin in the 2. Bundesliga The 2. Bundesliga ( ) is the second division of professional football in Germany. It was implemented 11 years after the founding of the Fußball-Bundesliga as the new second division for professional football. The 2. Bundesliga is ranked below .... References External links * 1960 births Living people People from Offenburg Sportspeople from Freiburg (region) German footballers Association football defenders Bundesliga players 2. Bundesliga players FC Bayern Munich footballers Karlsruher SC players Tennis Borussia Berlin players German football managers Offenburger FV players Footballers from Baden-Württemberg {{Germany-footy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epithelial Root Sheath
The Hertwig epithelial root sheath (HERS) or epithelial root sheath is a proliferation of epithelial cells located at the cervical loop of the enamel organ in a developing tooth. Hertwig epithelial root sheath initiates the formation of dentin in the root of a tooth by causing the differentiation of odontoblasts from the dental papilla. The root sheath eventually disintegrates with the periodontal ligament, but residual pieces that do not completely disappear are seen as epithelial cell rests of Malassez (ERM). These rests can become cystic, presenting future periodontal infections. Structure Hertwig epithelial root sheath is derived from the inner and outer enamel epithelium of the enamel organ.Illustrated Dental Embryology, Histology, and Anatomy, Bath-Balogh and Fehrenbach, Elsevier, 2011, p. 66 Function The sheath is also responsible for multiple or accessory roots (medial growth) and lateral or accessory canals in the root (break in epithelium).Ten Cate's Oral His ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benjamin Hertwig
Benjamin Hertwig is a Canadian poet, whose debut poetry collection ''Slow War'' was a shortlisted finalist for the Governor General's Award for English-language poetry at the 2017 Governor General's Awards. A former member of the Canadian Armed Forces who served in Afghanistan, he has also published short fiction and non-fiction work in '' Maisonneuve'', ''Canadian Literature'', ''The Walrus'', '' Ricepaper'', '' Geez'', '' Prairie Fire'', ''Pleiades'' and ''The New York Times''. He won a National Magazine Award in the Personal Journalism category in 2017 for "The Burn". '' |
