{"id":79489,"date":"2006-07-04T00:00:00","date_gmt":"2006-07-04T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/desarrollo-de-la-estructura-dinamica-de-los-osiculos-timpanicos-en-fetos\/"},"modified":"2006-07-04T00:00:00","modified_gmt":"2006-07-04T00:00:00","slug":"desarrollo-de-la-estructura-dinamica-de-los-osiculos-timpanicos-en-fetos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/embriologia-humana\/desarrollo-de-la-estructura-dinamica-de-los-osiculos-timpanicos-en-fetos\/","title":{"rendered":"Desarrollo de la estructura dinamica de los osiculos timpanicos en fetos"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Ricardo Mar\u00eda no Saviron Cornudella <\/strong><\/h2>\n<p>Hemos estudiado el desarrollo de la organizaci\u00f3n din\u00e1mica de los os\u00edculos timp\u00e1nicos en embriones y fetos humanos. Para ello se han estudiado 45 series embriol\u00f3gicas humanas de edades comprendidas entre los 32 d\u00edas (6 mm) y reci\u00e9n nacidos. una vez realizadas las mediciones para datar cronol\u00f3gicamente los embriones y fetos, se llevo a cabo una minuciosa y cuidadosa disecci\u00f3n de los temporales en bloque; posteriormente fueron fijados en formol al 10 %, descalcificados con \u00e1cido n\u00edtrico al 2%, deshidratados en alcoholes a concentraciones progresivamente crecientes, incluidos en parafina, cortados en serie a 7 gin., Y te\u00f1idos con la t\u00e9cnica tricr\u00f3mico de martins. los os\u00edculos timp\u00e1nicos se desarrollan mediante dos tipos de osificaci\u00f3n intramembranosa y endocondral. Por osificaci\u00f3n membranosa las corticales de hueso peri\u00f3stico y la totalidad de la ap\u00f3fisis anterior del martillo y por osificaci\u00f3n endocondral el resto de los os\u00edculos. La ap\u00f3fisis externa y el mango del martillo, y la ap\u00f3fisis lenticular se desarrollan por un mecanismo de sustituci\u00f3n endocondral mientras que el resto de hueso lo hace por aposici\u00f3n y reabsorci\u00f3n end\u00f3stica. el desarrollo de la organizaci\u00f3n de las l\u00edneas de fuerza del martillo comienza a las 16 semanas por medio de dos fasc\u00edculos corticales situados en el cuello, a las 21 semanas se prolongan hacia la cabeza, a las 23 semanas a la ap\u00f3fisis externa y a las 24 semanas al mango. En el mango del martillo la distribuci\u00f3n de las lineas de fuerza se transmite mediante tres fasc\u00edculos cardinales, dos por las corticales y uno por el centro del hueso. Este fasc\u00edculo intermedio se origina a partir de las 29 semanas de desarrollo y termina de consolidarse a las 31 semanas. En la ap\u00f3fisis externa las lineas de fuerza est\u00e1n representadas por dos fasc\u00edculos que se originan en el cuello y que terminan rodeando a la cavidad medular a las 32 semanas. el desarrollo de la organizaci\u00f3n de las l\u00edneas de fuerza<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Desarrollo de la estructura dinamica de los osiculos timpanicos en fetos<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Desarrollo de la estructura dinamica de los osiculos timpanicos en fetos <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Ricardo Mar\u00eda no Saviron Cornudella <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Zaragoza<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 07\/04\/2006<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Rene Sarrat Torreguitart<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: arturo Vera gil <\/li>\n<li>hector Valles varela (vocal)<\/li>\n<li>joan Nardi vilardaga (vocal)<\/li>\n<li> Crovetto de la torre Miguel angel (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Ricardo Mar\u00eda no Saviron Cornudella Hemos estudiado el desarrollo de la organizaci\u00f3n din\u00e1mica de los os\u00edculos timp\u00e1nicos [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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