ORGAN\u0130ZMALARDA V\u00dcCUT \u00d6RT\u00dcLER\u0130
\n \u0130\u00e7 iskelete sahip organizmalarda v\u00fccudun yumu\u015fak k\u0131s\u0131mlar\u0131n\u0131 korunmas\u0131 ve kurumas\u0131n\u0131n \u00f6nlenmesi v\u00fccudu \u00f6rten deri tabakas\u0131 taraf\u0131ndan sa\u011flan\u0131r. V\u00fccut \u00f6rt\u00fcleri baz\u0131 canl\u0131larda epidermis denilen tek s\u0131ra halinde bir h\u00fccre tabakas\u0131ndan olu\u015fmu\u015ftur. Epidermis h\u00fccrelerin salg\u0131lad\u0131\u011f\u0131 mukus, keratin ve ayr\u0131ca bu h\u00fccrelerden olu\u015fturulan k\u0131l, t\u00fcy, t\u0131rnak gibi yap\u0131lar koruyucu maddelerdir. Bu maddeler zamanla kaybolur ve yenilenir.
\n \u00d6rne\u011fin omurgas\u0131zlarda s\u00fcngerlerde, solucanlarda, yumu\u015fak\u00e7alarda tek s\u0131ra h\u00fccre tabakas\u0131ndan olu\u015fan epidermiste nemlilik ve kayganl\u0131k sa\u011flayan salg\u0131 h\u00fccreleri bulunur.
\n Omurgal\u0131larda v\u00fccudu \u00f6rten deri; \u00fcst deri (epidermis) ve alt deri (dermis) olarak iki tabakadan olu\u015fmu\u015ftur. Epidermis, embriyonun ektoderm tabakas\u0131ndan meydana gelmi\u015ftir. Epidermis \u00e7ok tabakal\u0131 yass\u0131 epitel h\u00fccrelerinden olu\u015fmu\u015ftur. Kan damarlar\u0131 ve sinirleri yoktur. Epidermisin \u00fcst k\u0131sm\u0131nda bulunan yass\u0131 h\u00fccreler \u00f6l\u00fcd\u00fcr . Zamanla \u00f6len bu k\u0131s\u0131mlar d\u00f6k\u00fcl\u00fcr ve yerine alttaki epidermis h\u00fccrelerince yenileri olu\u015fturulur. \u00d6l\u00fc h\u00fccrelerin i\u00e7inde kolay \u00e7\u00f6z\u00fcnmeyen lifli proteinler (keratin) birikmi\u015ftir. Alttaki h\u00fccreleri d\u0131\u015f \u00e7evrenin fiziksel ve kimyasal etkilerinden korur. Epidermisin keratinli olan bu d\u0131\u015f tabakas\u0131na korun tabakas\u0131 (korneum) ad\u0131 verilir. V\u00fccuttaki k\u0131l, t\u00fcy, t\u0131rnak ve deriye renk veren melanin bu tabakan\u0131n \u00fcr\u00fcnleridir. K\u0131l, t\u0131rnak gibi yap\u0131lar\u0131n k\u00f6keni epidermistir. Korun tabakas\u0131 alt\u0131nda canl\u0131 epidermis h\u00fccrelerinden olu\u015fan malpigi tabakas\u0131 bulunur. Silindirik epitelden olu\u015fmu\u015f bu tabaka hem korun tabakas\u0131n\u0131n yenilenmesini sa\u011flar, hem de pigmentli h\u00fccreleriyle deriye renk verir.
\n Embiryonun mezoderm tabakas\u0131n\u0131n farkl\u0131la\u015fmas\u0131yla olu\u015fan dermis, esnek telli ba\u011f dokudan olu\u015fmu\u015ftur. Epidermisin alt\u0131nda kal\u0131n bir tabakad\u0131r. Kan ve lenf damarlar\u0131, sinir u\u00e7lar\u0131, ter, s\u00fct ve ya\u011f bezleri, k\u0131l folik\u00fclleri duyu resept\u00f6rleri dermiste yer al\u0131r. H\u00fccreleri canl\u0131d\u0131r.<\/p>\n","protected":false},"excerpt":{"rendered":"
ORGAN\u0130ZMALARDA V\u00dcCUT \u00d6RT\u00dcLER\u0130 \u0130\u00e7 iskelete sahip organizmalarda v\u00fccudun yumu\u015fak k\u0131s\u0131mlar\u0131n\u0131 korunmas\u0131 ve kurumas\u0131n\u0131n \u00f6nlenmesi v\u00fccudu \u00f6rten deri tabakas\u0131 taraf\u0131ndan sa\u011flan\u0131r. V\u00fccut \u00f6rt\u00fcleri baz\u0131 canl\u0131larda epidermis denilen tek s\u0131ra halinde bir h\u00fccre tabakas\u0131ndan olu\u015fmu\u015ftur. Epidermis h\u00fccrelerin salg\u0131lad\u0131\u011f\u0131 mukus, keratin ve ayr\u0131ca bu h\u00fccrelerden olu\u015fturulan k\u0131l, t\u00fcy, t\u0131rnak gibi yap\u0131lar koruyucu maddelerdir. Bu maddeler zamanla kaybolur ve …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1407,1403],"tags":[7560,5880,7559,7558,2303],"class_list":["post-3285","post","type-post","status-publish","format-standard","hentry","category-fen-ve-teknoloji-odevleri","category-odevler","tag-embiryo","tag-epidermis","tag-korneum","tag-organizmada-vucut-ortuleri","tag-protein"],"_links":{"self":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/posts\/3285","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/comments?post=3285"}],"version-history":[{"count":0,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/posts\/3285\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/media?parent=3285"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/categories?post=3285"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/tags?post=3285"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}