{"id":90,"date":"2022-09-20T09:37:00","date_gmt":"2022-09-20T09:37:00","guid":{"rendered":"https:\/\/valuestream.club\/?p=83"},"modified":"2022-09-20T09:37:00","modified_gmt":"2022-09-20T09:37:00","slug":"dintii-nu-sunt-oase-ci-piele","status":"publish","type":"post","link":"https:\/\/valuestream.club\/?p=90","title":{"rendered":"Din\u021bii nu sunt oase ci piele…"},"content":{"rendered":"<\/p>\n
Istoria din\u021bilor no\u0219tri este mult mai ciudat\u0103 dec\u00e2t ar p\u0103rea. Este logic s\u0103 presupunem c\u0103 din\u021bii sunt oase. Sunt albi, tari, ca un os la aspect, conving\u0103tor, nu? A\u0219a pare, dar, nu, conform \u0219tiin\u021bei, din\u021bii nu au nicio leg\u0103tur\u0103 cu oasele. De fapt, au mai multe \u00een comun cu pielea ta dec\u00e2t cu oasele! Sun\u0103 nebun sau nu, acu\u0219 vedem. \ud83d\ude31<\/span><\/div>\n
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At\u00e2t oasele, c\u00e2t \u0219i din\u021bii sunt albi \u0219i duri, dar sunt aranja\u021bi diferit. Din\u021bii sunt alc\u0103tui\u021bi din calciu, fosfor \u0219i alte minerale. Oasele con\u021bin \u0219i ele aceste substan\u021be, dar \u00een cantit\u0103\u021bi mult mai mici. Ele sunt formate \u00een mare parte dintr-o protein\u0103 numit\u0103 colagen \u0219i sunt acoperite la exterior cu periost, \u021besutul viu care hr\u0103ne\u0219te celulele osoase.<\/span><\/p>\n

Materialul oaselor le permite s\u0103 creasc\u0103 \u0219i s\u0103 se regenereze – oasele rupte cresc din nou \u00eempreun\u0103. Smal\u021bul dentar este ne\u00eensufle\u021bit, este incapabil de regenerare, a\u0219a c\u0103 un dinte cr\u0103pat sau rupt nu poate cre\u0219te \u00eenapoi. Dar smal\u021bul este cel mai dur \u021besut al corpului uman, capabil s\u0103 reziste la sarcini pe care coastele tale nu le pot suporta.<\/span><\/p>\n

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Din\u021bii difer\u0103 ca structur\u0103 fa\u021b\u0103 de oase, pentru c\u0103 nu provin din ei, ci din solzi de pe\u0219te, cu care erau echipa\u021bi str\u0103mo\u0219ii no\u0219tri \u00eendep\u0103rta\u021bi.<\/span><\/span><\/p>\n

Cu mult timp \u00een urm\u0103, cu 410 de milioane de ani, pe\u0219tii cartilagino\u0219i au decis c\u0103 a-\u0219i mu\u0219ca prada era mai bine dec\u00e2t s\u0103 \u00eencerce s\u0103 o \u00eenghit\u0103 \u00eentreag\u0103. \u0218i au \u00eenceput s\u0103 creasc\u0103 solzi \u00eent\u0103ri\u021bi cu dentina pe bot, ceea ce a ajutat s\u0103 apuce \u0219i s\u0103 rup\u0103 mai bine alimentele. Schimbate semnificativ de-a lungul a milioane de ani, solzii de dentina \u00ee\u021bi cresc acum \u0219i la tine.<\/span><\/p>\n<\/p>\n

\u00cen acela\u0219i mod, pielea \u0219i p\u0103rul t\u0103u au o origine comun\u0103 cu solzii. S-a dovedit c\u0103 dezvoltarea din\u021bilor, a pielii \u0219i a p\u0103rului la oameni este \u00eenc\u0103 reglementat\u0103 de acela\u0219i set de gene ca \u0219i cre\u0219terea solzilor la pe\u0219ti. Deci din\u021bii t\u0103i, din punct de vedere al evolu\u021biei, nu sunt oase, ci piele foarte modificat\u0103.<\/p>\n

Iat\u0103, am ajuns s\u0103 aflu \u0219i asta…<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Istoria din\u021bilor no\u0219tri este mult mai ciudat\u0103 dec\u00e2t ar p\u0103rea. Este logic s\u0103 presupunem c\u0103 din\u021bii sunt oase. Sunt albi, tari, ca un os la aspect, conving\u0103tor,…<\/p>\n","protected":false},"author":2,"featured_media":2480,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[3],"tags":[],"class_list":["post-90","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-curiozitate"],"_links":{"self":[{"href":"https:\/\/valuestream.club\/index.php?rest_route=\/wp\/v2\/posts\/90","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/valuestream.club\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/valuestream.club\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/valuestream.club\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/valuestream.club\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=90"}],"version-history":[{"count":0,"href":"https:\/\/valuestream.club\/index.php?rest_route=\/wp\/v2\/posts\/90\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/valuestream.club\/index.php?rest_route=\/wp\/v2\/media\/2480"}],"wp:attachment":[{"href":"https:\/\/valuestream.club\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=90"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/valuestream.club\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=90"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/valuestream.club\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=90"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}