[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.hztop.cz\/zirafa-zdroj-spousty-dotazu-od-vasich-deti\/#Article","mainEntityOfPage":"https:\/\/www.hztop.cz\/zirafa-zdroj-spousty-dotazu-od-vasich-deti\/","headline":"\u017dirafa \u2013 zdroj spousty dotaz\u016f od va\u0161ich d\u011bt\u00ed","name":"\u017dirafa \u2013 zdroj spousty dotaz\u016f od va\u0161ich d\u011bt\u00ed","description":"V\u011bt\u0161ina z n\u00e1s ji\u017e v d\u011btstv\u00ed p\u0159i n\u00e1v\u0161t\u011bv\u011b zoologick\u00e9 zahrady se pravd\u011bpodobn\u011b nejv\u00edce t\u011b\u0161ila na to a\u017e uvid\u00ed \u017eirafu, proto\u017ee ta zdaleka nep\u0159ipom\u00edn\u00e1 nic, s \u010d\u00edm jsme se setkali d\u0159\u00edve, ale rozhodn\u011b i pot\u00e9. Neobvykl\u00e9 stvo\u0159en\u00ed, kter\u00e9 je nejvy\u0161\u0161\u00edm suchozemsk\u00fdm zv\u00ed\u0159etem na cel\u00e9 na\u0161\u00ed planet\u011b a do\u017e\u00edv\u00e1 se 25 let. Dosp\u011bl\u00ed jedinci v\u00e1\u017e\u00ed 790-1270 kg...","datePublished":"2020-02-21","dateModified":"2023-05-15","author":{"@type":"Person","@id":"https:\/\/www.hztop.cz\/author\/#Person","name":"","url":"https:\/\/www.hztop.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c0c0e488d5f88ebdb5e32a558e21f6df03f38644814b5677bcd67e16813bee55?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c0c0e488d5f88ebdb5e32a558e21f6df03f38644814b5677bcd67e16813bee55?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"hztop.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.hztop.cz\/wp-content\/uploads\/img_a371616_w3554_t1582955431.jpg","url":"https:\/\/www.hztop.cz\/wp-content\/uploads\/img_a371616_w3554_t1582955431.jpg","height":0,"width":0},"url":"https:\/\/www.hztop.cz\/zirafa-zdroj-spousty-dotazu-od-vasich-deti\/","about":["V\u011bda"],"wordCount":412,"articleBody":"\tV\u011bt\u0161ina z n\u00e1s ji\u017e v d\u011btstv\u00ed p\u0159i n\u00e1v\u0161t\u011bv\u011b zoologick\u00e9 zahrady se pravd\u011bpodobn\u011b nejv\u00edce t\u011b\u0161ila na to a\u017e uvid\u00ed \u017eirafu, proto\u017ee ta zdaleka nep\u0159ipom\u00edn\u00e1 nic, s \u010d\u00edm jsme se setkali d\u0159\u00edve, ale rozhodn\u011b i pot\u00e9. Neobvykl\u00e9 stvo\u0159en\u00ed, kter\u00e9 je nejvy\u0161\u0161\u00edm suchozemsk\u00fdm zv\u00ed\u0159etem na cel\u00e9 na\u0161\u00ed planet\u011b a do\u017e\u00edv\u00e1 se 25 let. Dosp\u011bl\u00ed jedinci v\u00e1\u017e\u00ed 790-1270 kg a jsou vysoc\u00ed a\u017e 4,3-5,8 m. \t \tExistuj\u00ed v\u0161ak ot\u00e1zky, kter\u00e9 n\u00e1s tr\u00e1pily od t\u00e9 doby, co jsme byli mal\u00ed a dneska se pokus\u00edme na p\u00e1r z nich odpov\u011bd\u011bt.\t \tPro\u010d je \u017eirafa tak vysok\u00e1? A kolik m\u00e1 obratl\u016f?\t \tStoprocentn\u00ed odpov\u011b\u010f neexistuje, ale pravd\u011bpodobn\u011b je to zp\u016fsobeno evoluc\u00ed, aby \u017eirafy mohly na nebezpe\u010dn\u00e9 africk\u00e9 savan\u011b sledovat prost\u0159ed\u00ed kolem sebe a aby n\u00e1hodou nep\u0159ehl\u00e9dly p\u0159ipadn\u00e9ho dravce. D\u016fle\u017eit\u00e1 je tak\u00e9 jejich strava, kter\u00e1 se p\u0159edev\u0161\u00edm skl\u00e1d\u00e1 z list\u00ed strom\u016f, ke kter\u00e9mu by se jinak v\u016fbec nedostaly. P\u0159ekvapiv\u00e9 tak\u00e9 je, \u017ee \u017eirafy maj\u00ed \u00fapln\u011b stejn\u00fd po\u010det obratl\u016f jako lid\u00e9. Rozd\u00edl je ale v d\u00e9lce jednotliv\u00fdch obratl\u016f, proto\u017ee ty u lid\u00ed maj\u00ed d\u00e9lku 1,27 cm, a u \u017eiraf 25,4 cm.\t \tJak to zvl\u00e1d\u00e1 srdce \u017eirafy? Nem\u00e1 n\u00e1hodou odkrven\u00fd mozek? Jak je mo\u017en\u00e9, \u017ee nezkolabuje, kdy\u017e nap\u0159. vrt\u00ed hlavou?\t \tVelice dobr\u00e1 ot\u00e1zka. Srdce \u017eirafy \u00fadajn\u011b je neuv\u011b\u0159iteln\u011b velk\u00e9 (0,6 m) a zdatn\u00e9, proto\u017ee se v n\u011bm vyvinuly siln\u00e9 svalov\u00e9 st\u011bny, kter\u00e9 zp\u016fsobuj\u00ed to, \u017ee krevn\u00ed tlak je dvakr\u00e1t v\u011bt\u0161\u00ed ne\u017e u ostatn\u00edch zv\u00ed\u0159at a d\u00edky tomu v\u0161echny jej\u00ed org\u00e1ny v\u010detn\u011b mozku jsou dostate\u010dn\u011b dokrven\u00e9, a\u0165 manipuluje svou hlavou jakkoliv.\t \tJak sp\u00ed?\t \tSp\u00ed ve stoje od 5 do 30 min denn\u011b. Nejedn\u00e1 se v\u0161ak o souvisl\u00fd sp\u00e1nek. V\u011bt\u0161inou se zd\u0159\u00edmnou pouze na 1-2 min, proto\u017ee cel\u00fd den (16 a\u017e 20 h) se v\u011bnuj\u00ed j\u00eddlu. Druh\u00fdm aspektem je, \u017ee necht\u011bj\u00ed ohrozit sv\u016fj \u017eivot a hl\u00eddaj\u00ed svoje okol\u00ed. \t \tPro\u010d \u017eirafy maj\u00ed modr\u00fd jazyk?\t \tNeexistuje \u017e\u00e1dn\u00e9 stoprocentn\u00ed vysv\u011btlen\u00ed, ale pravd\u011bpodobn\u011b jazyk \u017eirafy obsahuje daleko v\u00edce melaninu, aby byl chr\u00e1n\u011bn p\u0159ed UV z\u00e1\u0159en\u00edm – pod vlivem Slunce se zbarvuje mod\u0159e nebo fialov\u011b.\t                                                                                                                                                                                                                                                                                                                                                                                         4.2\/5 - (13 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"\u017dirafa \u2013 zdroj spousty dotaz\u016f od va\u0161ich d\u011bt\u00ed","item":"https:\/\/www.hztop.cz\/zirafa-zdroj-spousty-dotazu-od-vasich-deti\/#breadcrumbitem"}]}]