Epidermisin \u00e7ok katl\u0131 epitel yap\u0131s\u0131nda derinde yer alan ve b\u00fcy\u00fck bir \u00e7o\u011falma yetene\u011fine sahip olan epitel h\u00fccrelerinin \u00e7o\u011fu kolumnar tipte, ortadakiler k\u00fcboid ve en y\u00fczeydekiler de yass\u0131d\u0131r. <\/p>\n
Epidermisin derin katlar\u0131nda yer alan kolon bi\u00e7imindeki (kolumnar] h\u00fccreler, deri y\u00fczeyine do\u011fru yer de\u011fi\u015ftirirlerken yass\u0131la\u015f\u0131rlar, \u00e7ekirdeklerini kaybederler ve kera-tin denilen protein bak\u0131m\u0131ndan \u00e7ok zenginle\u015firler. Keratin su ge\u00e7irmeyen ve mekanik etkilere dayan\u0131kl\u0131 bir proteindir. Epidermisin en d\u0131\u015f b\u00f6l\u00fcm\u00fcn\u00fc olu\u015fturan yass\u0131 epitel tabakas\u0131na boynuzsu (pul) tabaka da diyebiliriz. Epidermis ve \u00d6zellikle epidermisin keratinle\u015fmi\u015f b\u00f6l\u00fcm\u00fc v\u00fccudun her yerinde ayn\u0131 kal\u0131nl\u0131kta de\u011fildir. \u00d6rne\u011fin, epidermis ve \u00f6zellikle bunun keratinle\u015fmi\u015f tabakas\u0131 ayak taban\u0131nda, avu\u00e7 i\u00e7inde \u00e7ok kal\u0131n olmas\u0131na kar\u015f\u0131l\u0131k g\u00f6zkapaklarmdaki deride \u00e7ok incedir. Derinin mekanik etkilerden fazla etkilenen b\u00f6l\u00fcmlerinde keratinle\u015fme \u00e7ok artar. Barfiks \u00e7al\u0131\u015fanlarda avu\u00e7 i\u00e7inde nas\u0131rla\u015fman\u0131n g\u00f6r\u00fclmesi, bu duruma bir \u00f6rnektir.<\/p>\n
Epidermis kendi i\u00e7inde be\u015f tabakaya ayr\u0131lm\u0131\u015ft\u0131r. Bunlar s\u0131ras\u0131yla d\u0131\u015ftan i\u00e7e do\u011fru \u015f\u00f6yle dizilmi\u015flerdir: En d\u0131\u015fta stratum korneum; bu tabakadaki h\u00fccreler yass\u0131la\u015fm\u0131\u015f (skuam\u00f6z-pul), \u00e7ekirdeklerini kaybetmi\u015f ve keratin denilen proteinden \u00e7ok zenginle\u015fmi\u015flerdir. Deri y\u00fczeyinden s\u00fcrekli kaybedilen h\u00fccreler bunlard\u0131r. Bu tabakan\u0131n alt\u0131ndaki tabaka ise \u201cStratum lusidum\u201d ad\u0131n\u0131 al\u0131r. Stratum lusidum avu\u00e7 i\u00e7i ve ayak taban\u0131 derisinin epidermisinde bulunur. Bunun alt\u0131nda stratum granulozum tabakas\u0131 bulunur. Bu tabakadaki h\u00fccrelerde keratin tanecikleri g\u00f6r\u00fclmeye ba\u015flan\u0131r. Stratum gran\u00fclozumun alt\u0131nda ise \u201cStratum spinozum\u201d denilen tabaka bulunur. Bunun da alt\u0131nda ise epidermisin en derin tabakas\u0131 olan \u201cStratum bazale\u201d bulunur. Stratum spinozum ve stratum bazale tabakalar\u0131n\u0131n ikisine birden \u201cStratum germinativum\u201d denir. Epidermisin hemen alt\u0131nda yer alan derinin dermi\u015f tabakas\u0131, epidermisin stratum bazale tabakas\u0131na do\u011fru eldiven parmaklar\u0131 bi\u00e7iminde uzant\u0131lar g\u00f6nderir. Bu uzant\u0131lara \u201cDermi\u015f pap\u0130\u0130lalar\u0131\u201d denir. Dermi\u015f papillalar\u0131 epidermis ve dermi\u015f tabakalar\u0131n\u0131n birbirine s\u0131k\u0131ca tutunmalar\u0131m sa\u011flarlar ve b\u00f6ylece bu iki tabakan\u0131n birbiri \u00fczerinde kaymalar\u0131na engel olurlar.<\/p>\n","protected":false},"excerpt":{"rendered":"
Epidermisin \u00e7ok katl\u0131 epitel yap\u0131s\u0131nda derinde yer alan ve b\u00fcy\u00fck bir \u00e7o\u011falma yetene\u011fine sahip olan epitel h\u00fccrelerinin \u00e7o\u011fu kolumnar tipte, ortadakiler k\u00fcboid ve en y\u00fczeydekiler de yass\u0131d\u0131r. Epidermisin derin katlar\u0131nda yer alan kolon bi\u00e7imindeki (kolumnar] h\u00fccreler, deri y\u00fczeyine do\u011fru yer de\u011fi\u015ftirirlerken yass\u0131la\u015f\u0131rlar, \u00e7ekirdeklerini kaybederler ve kera-tin denilen protein bak\u0131m\u0131ndan \u00e7ok zenginle\u015firler. Keratin su ge\u00e7irmeyen 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":[8568,8569,8570],"class_list":["post-3750","post","type-post","status-publish","format-standard","hentry","category-fen-ve-teknoloji-odevleri","category-odevler","tag-epidermis-ve-katmanlari","tag-kolumnar","tag-stratum-lusidum"],"_links":{"self":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/posts\/3750","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=3750"}],"version-history":[{"count":0,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/posts\/3750\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/media?parent=3750"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/categories?post=3750"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/tags?post=3750"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}