{"id":36192,"date":"2019-08-22T03:20:07","date_gmt":"2019-08-22T00:20:07","guid":{"rendered":"https:\/\/bilimvegelecek.com.tr\/?p=36192"},"modified":"2019-08-19T17:25:26","modified_gmt":"2019-08-19T14:25:26","slug":"agriya-duyarli-yeni-bir-organ-kesfedildi","status":"publish","type":"post","link":"https:\/\/bilimvegelecek.com.tr\/index.php\/2019\/08\/22\/agriya-duyarli-yeni-bir-organ-kesfedildi","title":{"rendered":"A\u011fr\u0131ya duyarl\u0131 yeni bir organ ke\u015ffedildi"},"content":{"rendered":"

\u0130sve\u00e7\u2019te bulunan Karolinska Enstit\u00fcs\u00fc\u2019nde \u00e7al\u0131\u015fma y\u00fcr\u00fcten ara\u015ft\u0131rmac\u0131lar, a\u011fr\u0131l\u0131 fiziksel hasar\u0131 alg\u0131layabilen yeni bir duyusal organ ke\u015ffettiklerini a\u00e7\u0131klad\u0131.<\/p>\n

Science dergisinde yay\u0131mlanan ara\u015ft\u0131rmaya g\u00f6re; toplum i\u00e7erisindeki her be\u015f ki\u015fiden biri neredeyse s\u00fcrekli a\u011fr\u0131 \u00e7ekiyor ve bu ki\u015filer, a\u011fr\u0131 kesiciye ihtiya\u00e7 duyduklar\u0131n\u0131 ifade ediyor. Bu noktadan bak\u0131ld\u0131\u011f\u0131nda s\u00fcrekli a\u011fr\u0131 hissi, toplum taraf\u0131ndan y\u00fcksek maliyetlere ula\u015fan ila\u00e7 kullan\u0131m\u0131 ile birlikte toplum taraf\u0131ndan bask\u0131lanmaya \u00e7al\u0131\u015f\u0131l\u0131yor. Ancak sa\u011fkal\u0131m i\u00e7in (ki\u015filerin hayatta kalmalar\u0131 i\u00e7in) a\u011fr\u0131 hissine duyarl\u0131l\u0131k gereklidir ve bu duyarl\u0131l\u0131\u011f\u0131n koruyucu bir i\u015flevi de vard\u0131r. \u00d6rne\u011fin, keskin bir cisim elimize sapland\u0131\u011f\u0131nda ya da kendimizi yakt\u0131\u011f\u0131m\u0131zda dokuya zarar gelmesini \u00f6nleyen refleks reaksiyonlar\u0131n ger\u00e7ekle\u015fmesi.<\/p>\n

Karolinska Enstit\u00fcs\u00fc\u2019nde \u00e7al\u0131\u015fma y\u00fcr\u00fcten ara\u015ft\u0131rmac\u0131lar, cilt \u00fczerindeki tehlikeli \u00e7evresel tahri\u015fe duyarl\u0131 olan yeni bir duyusal organ\u0131n ke\u015ffedildi\u011fini duyurdu. Bask\u0131ya ve i\u011fne t\u00fcrevi maddelerin cilde batmas\u0131yla olu\u015fan ac\u0131ya duyarl\u0131 olan bu organ, ahtapot bacaklar\u0131na benzer uzun sa\u00e7akl\u0131 \u00e7\u0131k\u0131nt\u0131lara ve deri i\u00e7erisine a\u011f benzeri bir bi\u00e7imde yay\u0131lm\u0131\u015f glia h\u00fccrelerine sahiptir. \u00c7al\u0131\u015fma, a\u011fr\u0131ya duyarl\u0131 olan bu yeni organ\u0131n neye benzedi\u011fini ve ciltte bulunan a\u011fr\u0131ya duyarl\u0131 sinirlerle birlikte nas\u0131l bir organizasyona sahip oldu\u011funu ortaya koyuyor.<\/p>\n

\"\"
A\u011fr\u0131ya duyarl\u0131 bu organ, ciltteki epitel dokuda a\u011fs\u0131 bir tabaka halinde bulunuyor<\/figcaption><\/figure>\n

Bu organ\u0131n aktif hale gelmesi ile sinir sisteminde elektriksel kuvvet da\u011f\u0131l\u0131m\u0131n\u0131n g\u00f6zlendi\u011fi ve bu durumun sonucunda ger\u00e7ekle\u015fen \u00e7e\u015fitli reaksiyonlarla a\u011fr\u0131 hissinin olu\u015ftu\u011fu ifade ediliyor. Ara\u015ft\u0131rmac\u0131lar, deneyler s\u0131ras\u0131nda bu organ\u0131 i\u015flevsiz hale getirdi ve bu durumun sonucunda bireylerde fiziksel a\u011fr\u0131 hissetme yetene\u011finde azalma ya\u015fand\u0131\u011f\u0131 ortaya koyuldu. Dolay\u0131s\u0131yla bu a\u011fs\u0131 organ\u0131 olu\u015fturan h\u00fccrelerin fiziksel uyaranlara kar\u015f\u0131 olduk\u00e7a hassas olduklar\u0131 sonucuna ula\u015f\u0131ld\u0131.<\/p>\n

Karolinska Enstit\u00fcs\u00fc T\u0131bbi Biyokimya ve Biyofizik Anabilim Dal\u0131\u2019nda \u00e7al\u0131\u015fma y\u00fcr\u00fcten Patrik Ernfors, \u201c\u00c7al\u0131\u015fmam\u0131z a\u011fr\u0131ya duyarl\u0131l\u0131\u011f\u0131n yaln\u0131zca ciltteki sinirlerde de\u011fil, ayn\u0131 zamanda yak\u0131n zamanda ke\u015ffedilen bu organda da bulundu\u011funu ortaya koydu. Bu anlamda ke\u015fif, fiziksel olarak hissetti\u011fimiz duyumun h\u00fccresel mekanizmalar\u0131na dair anlay\u0131\u015f\u0131m\u0131z\u0131 de\u011fi\u015ftiriyor\u201d a\u00e7\u0131klamalar\u0131nda bulundu.<\/p>\n

Kaynak:<\/strong> https:\/\/medicalxpress.com\/news\/2019-08-pain-skin.html<\/p>\n","protected":false},"excerpt":{"rendered":"

\u0130sve\u00e7\u2019te bulunan Karolinska Enstit\u00fcs\u00fc\u2019nde \u00e7al\u0131\u015fma y\u00fcr\u00fcten ara\u015ft\u0131rmac\u0131lar, a\u011fr\u0131l\u0131 fiziksel hasar\u0131 alg\u0131layabilen yeni bir duyusal organ ke\u015ffettiklerini a\u00e7\u0131klad\u0131. Science dergisinde yay\u0131mlanan ara\u015ft\u0131rmaya g\u00f6re; toplum i\u00e7erisindeki her be\u015f ki\u015fiden biri neredeyse s\u00fcrekli a\u011fr\u0131 \u00e7ekiyor ve bu ki\u015filer, a\u011fr\u0131 kesiciye ihtiya\u00e7 duyduklar\u0131n\u0131 ifade ediyor. Bu noktadan bak\u0131ld\u0131\u011f\u0131nda s\u00fcrekli a\u011fr\u0131 hissi, toplum taraf\u0131ndan y\u00fcksek maliyetlere ula\u015fan ila\u00e7 kullan\u0131m\u0131 ile […]<\/p>\n","protected":false},"author":1390,"featured_media":36199,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19],"tags":[1624,3396,306,1190],"class_list":["post-36192","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bilim-gundemi","tag-agri","tag-cilt","tag-hucre","tag-organ"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t