{"id":21024661,"date":"2015-04-17T14:20:29","date_gmt":"2015-04-17T12:20:29","guid":{"rendered":"http:\/\/znanost.geek.hr\/?p=21024661"},"modified":"2016-10-27T23:36:01","modified_gmt":"2016-10-27T21:36:01","slug":"znanstvenici-uzivo-snimili-i-otkrili-razlog-pucketanja-zglobova-prstiju","status":"publish","type":"post","link":"https:\/\/geek.hr\/znanost\/clanak\/znanstvenici-uzivo-snimili-i-otkrili-razlog-pucketanja-zglobova-prstiju\/","title":{"rendered":"Znanstvenici u\u017eivo snimili i otkrili razlog pucketanja zglobova prstiju"},"content":{"rendered":"<p>Razlog pucketaju\u0107eg zvuka zglobova, dugo je vremena podru\u010dje rasprave me\u0111u fiziolozima. Ali sada, kanadski su znanstvenici uz pomo\u0107 MRI snimke u\u017eivo promatrali proces unutar zgloba prsta ruke, te do\u0161li do zaklju\u010dka koji bi mogao, napokon, uti\u0161ati dugotrajnu debatu, prenosi <a href=\"http:\/\/io9.gizmodo.com\/why-do-knuckles-go-pop-researchers-may-finally-have-th-1698029800\" target=\"_blank\" rel=\"noopener\">io9<\/a>.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-large wp-image-21024662\" src=\"https:\/\/geek.hr\/znanost\/wp-content\/uploads\/sites\/14\/2015\/04\/50985080985-720x360.jpg\" alt=\"50985080985\" width=\"620\" height=\"310\" srcset=\"https:\/\/geek.hr\/znanost\/wp-content\/uploads\/sites\/14\/2015\/04\/50985080985-720x360.jpg 720w, https:\/\/geek.hr\/znanost\/wp-content\/uploads\/sites\/14\/2015\/04\/50985080985-300x150.jpg 300w, https:\/\/geek.hr\/znanost\/wp-content\/uploads\/sites\/14\/2015\/04\/50985080985.jpg 800w\" sizes=\"(max-width: 620px) 100vw, 620px\" \/><\/p>\n<p>Znanstvenici su desetlje\u0107ima pretpostavljali kako pucketaju\u0107i zvuk zglobova proizlazi iz formiranja ili sloma plinovite \u0161upljine unutar zgloba. No, nedostatak vizualnih dokaza nije bio sposoban konkretno ponuditi odgovor na fiziolo\u0161ku nedoumicu.<\/p>\n<p>Kanadski znanstvenici predvo\u0111eni Gregory Kawchukom sa Sveu\u010dili\u0161ta Alberta, odlu\u010dili su rije\u0161iti dvojbe, skeniraju\u0107i proces pucketanja zgloba uz pomo\u0107 MRI aparata nad jednim ispitanikom. Tako su\u00a0istra\u017eiva\u010di bili u mogu\u0107nosti po prvi put u\u017eivo zabilje\u017eiti zbivanje u zglobu, koje se doga\u0111a u vremenu manjim od 310 milisekundi.<\/p>\n<p>Analiza snimke je pokazala kako u trenutku odvajanja artikularnih povr\u0161ina, dolazi do brzog formiranja \u0161upljine unutar zgloba, \u0161to po mi\u0161ljenju znanstvenika, dovodi do prepoznatljivog pucketaju\u0107eg zvuka, zahvaljuju\u0107i stvaranju \u0161upljine ispunjene plinom unutar sinovijalne teku\u0107ine (tvari koja podmazuje zglobove).<\/p>\n<p>Tako\u0111er, istra\u017eiva\u010di su primijetili i bijeli bljesak, koji se pojavljuje prije samog pucketanja, \u0161to su povezali s povla\u010denjem vode prije loma zgloba.<\/p>\n<p>&#8211; Kada se povr\u0161ine zgloba naglo odvoje, vi\u0161e ne postoji dostupna teku\u0107ina koja bi ispunila pove\u0107ani prostor, stoga dolazi do formiranja \u0161upljine koja je o\u010digledno povezana sa zvukom \u2013 zapisao je dr. Kawchuk u medicinskoj studiji objavljenoj u \u010dasopisu <em>PLOS One<\/em>.<\/p>\n<p><iframe loading=\"lazy\" title=\"Pop goes the knuckle | Science News\" width=\"880\" height=\"660\" src=\"https:\/\/www.youtube.com\/embed\/iL5sKNbRDBI?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Razlog pucketaju\u0107eg zvuka zglobova, dugo je vremena podru\u010dje rasprave me\u0111u fiziolozima. Ali sada, kanadski su znanstvenici uz pomo\u0107 MRI snimke u\u017eivo promatrali proces unutar zgloba prsta ruke, te do\u0161li do zaklju\u010dka koji bi mogao, napokon, uti\u0161ati dugotrajnu debatu, prenosi io9. Znanstvenici su desetlje\u0107ima pretpostavljali kako pucketaju\u0107i zvuk zglobova proizlazi iz formiranja ili sloma plinovite \u0161upljine [&hellip;]<\/p>\n","protected":false},"author":10022,"featured_media":21024662,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[1],"tags":[18270],"class_list":["post-21024661","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-znanost","tag-mri"],"modified_by":null,"_links":{"self":[{"href":"https:\/\/geek.hr\/znanost\/wp-json\/wp\/v2\/posts\/21024661","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/geek.hr\/znanost\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/geek.hr\/znanost\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/geek.hr\/znanost\/wp-json\/wp\/v2\/users\/10022"}],"replies":[{"embeddable":true,"href":"https:\/\/geek.hr\/znanost\/wp-json\/wp\/v2\/comments?post=21024661"}],"version-history":[{"count":0,"href":"https:\/\/geek.hr\/znanost\/wp-json\/wp\/v2\/posts\/21024661\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/geek.hr\/znanost\/wp-json\/wp\/v2\/media\/21024662"}],"wp:attachment":[{"href":"https:\/\/geek.hr\/znanost\/wp-json\/wp\/v2\/media?parent=21024661"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/geek.hr\/znanost\/wp-json\/wp\/v2\/categories?post=21024661"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/geek.hr\/znanost\/wp-json\/wp\/v2\/tags?post=21024661"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}