{"id":132733,"date":"2018-03-11T12:58:48","date_gmt":"2018-03-11T12:58:48","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estudio-del-sistema-visual-del-galapago-leproso-mauremys-leprosa-mecanismos-de-desarrollo-y-caracteres-de-la-etapa-adulta\/"},"modified":"2018-03-11T12:58:48","modified_gmt":"2018-03-11T12:58:48","slug":"estudio-del-sistema-visual-del-galapago-leproso-mauremys-leprosa-mecanismos-de-desarrollo-y-caracteres-de-la-etapa-adulta","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/estudio-del-sistema-visual-del-galapago-leproso-mauremys-leprosa-mecanismos-de-desarrollo-y-caracteres-de-la-etapa-adulta\/","title":{"rendered":"Estudio del sistema visual del gal\u00e1pago leproso, mauremys leprosa; mecanismos de desarrollo y caracteres de la etapa adulta"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Matias Hidalgo S\u00e1nchez <\/strong><\/h2>\n<p>En el desarrollo inicial del gal\u00e1pago leproso se observa una relaci\u00f3n espacio temporal entre la aparici\u00f3n de espacios extracelulares en la retina, nervio, quiasma y tracto \u00f3ptico, y la llegada de los primeros axones a esas regiones. el an\u00e1lisis a microscop\u00eda electr\u00f3nica de transmisi\u00f3n de la v\u00eda \u00f3ptica pone de relieve que los conos de crecimiento ax\u00f3nico se disponen en toda la regi\u00f3n ocupada por las fibras. No obstante, existe un gradiente de distribuci\u00f3n desde regiones ventrales a zonas progresivamente m\u00e1s dorsales. El marcaje anter\u00f3grado de la proyecci\u00f3n retin\u00f3fuga inicial muestra la existencia de una proyecci\u00f3n ipsilateral que no est\u00e1 presente en el adulto. Nuestros resultados ponen de relieve la existencia de una relaci\u00f3n topogr\u00e1fica entre la localizaci\u00f3n de los axones \u00f3pticos en la entrada del quiasma y el curso ipsilateral o contralateral que estos siguen. As\u00ed, los axones localizados caudalmente en la regi\u00f3n laterial del quiasma tienden a entrar en el tracto ipsilateral y los situados rostralmente cruzan la l\u00ednea media del suelo del dienc\u00e9falo y pasan al tracto contralateral.El marcaje retr\u00f3grado de la proyecci\u00f3n \u00f3ptica muestra que las c\u00e9lulas ganglionares ipsilaterales se localizan en la regi\u00f3n dorsocentral de la retina. La morfolog\u00eda de los conos de crecimiento es frecuentemente compleja y no parece guardar relaci\u00f3n con su posici\u00f3n en la v\u00eda \u00f3ptica y con su trayectoria ipsilateral o contralateral. la evoluci\u00f3n del n\u00famero de axones en el nervio muestra una fase de crecimiento hasta el estadio 21. A partir de \u00e9ste, el n\u00famero disminuye hasta presentar los valores del adulto. En la fase de p\u00e9rdida, el n\u00famero de axones se reduce en un 42%. En el nervio adulto las fibras \u00f3pticas se disponen seg\u00fan un orden ritonot\u00f3pico. Este orden decae en el quiasma y, en el tracto, se separan las fibras dorsales y ventrales, y se solapan las fibras nasales y temporales.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estudio del sistema visual del gal\u00e1pago leproso, mauremys leprosa; mecanismos de desarrollo y caracteres de la etapa adulta<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estudio del sistema visual del gal\u00e1pago leproso, mauremys leprosa; mecanismos de desarrollo y caracteres de la etapa adulta <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Matias Hidalgo S\u00e1nchez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Extremadura<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 29\/11\/1996<\/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>Gervasio Mart\u00edn Partido<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Carlos Lopez garcia <\/li>\n<li>julio Navascues Martinez (vocal)<\/li>\n<li>yolanda Ga\u00f1\u00e1n presmanes (vocal)<\/li>\n<li>Manuel Ramires fern\u00e1ndez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Matias Hidalgo S\u00e1nchez En el desarrollo inicial del gal\u00e1pago leproso se observa una relaci\u00f3n espacio temporal entre [&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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