[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.osibus.sk\/uzasne-fakty-o-meduzach\/#Article","mainEntityOfPage":"https:\/\/www.osibus.sk\/uzasne-fakty-o-meduzach\/","headline":"\u00da\u017easn\u00e9 fakty o med\u00fazach","name":"\u00da\u017easn\u00e9 fakty o med\u00fazach","description":"–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 S\u00fa vo\u013ene pl\u00e1vaj\u00face zvierat\u00e1, ktor\u00e9 pou\u017e\u00edvaj\u00fa svoje pulzuj\u00face \u017eel\u00e9 telo tvaru zvona, aby sa mohli pohybova\u0165 a pou\u017e\u00edvaj\u00fa svoje […]","datePublished":"2017-12-23","dateModified":"2017-12-23","author":{"@type":"Person","@id":"https:\/\/www.osibus.sk\/author\/devene\/#Person","name":"devene","url":"https:\/\/www.osibus.sk\/author\/devene\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/2b882a21216b34ba28e79730eea9356b725e9a0bf9885ae3bedd792ae606fb10?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/2b882a21216b34ba28e79730eea9356b725e9a0bf9885ae3bedd792ae606fb10?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"osibus.sk","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.osibus.sk\/wp-content\/uploads\/img_a285236_w16524_t1519408542.jpg","url":"https:\/\/www.osibus.sk\/wp-content\/uploads\/img_a285236_w16524_t1519408542.jpg","height":0,"width":0},"url":"https:\/\/www.osibus.sk\/uzasne-fakty-o-meduzach\/","wordCount":378,"articleBody":"–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 S\u00fa vo\u013ene pl\u00e1vaj\u00face zvierat\u00e1, ktor\u00e9 pou\u017e\u00edvaj\u00fa svoje pulzuj\u00face \u017eel\u00e9 telo tvaru zvona, aby sa mohli pohybova\u0165 a pou\u017e\u00edvaj\u00fa svoje chvostov\u00e9 ch\u00e1padl\u00e1 na zachyt\u00e1vanie koristi.–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Med\u00fazy s\u00fa najstar\u0161ie multiorg\u00e1nov\u00e9 zvierat\u00e1, ktor\u00e9 ob\u00fdvaj\u00fa moria u\u017e viac ako 700 mili\u00f3nov rokov, \u017eili e\u0161te pred dinosaurami.–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Med\u00fazy sa nach\u00e1dzaj\u00fa v ka\u017edom oce\u00e1ne na celom svete a najrad\u0161ej \u017eij\u00fa v pobre\u017en\u00fdch oblastiach.–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Niektor\u00e9 med\u00fazy s\u00fa pre \u010dloveka ne\u0161kodn\u00e9, ale in\u00e9 maj\u00fa jed, ktor\u00fd m\u00f4\u017ee by\u0165 dokonca smrte\u013en\u00fd.–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Med\u00faza \u0161tvorhranka je jedn\u00fdm z najviac jedovat\u00fdch zvierat na plan\u00e9te. Hoci usmrtenia s\u00fa vz\u00e1cne v\u010faka dostupn\u00fdm protijedom a lie\u010dbe, pop\u0155hlenie med\u00fazou \u0161tvorhrankou m\u00f4\u017ee sp\u00f4sobi\u0165 srdcov\u00fd z\u00e1chvat a smr\u0165 po\u010das 5 min\u00fat.–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Telo med\u00fazy tvor\u00ed pribli\u017ene 95-98% vody a nemaj\u00fa \u017eiadne o\u010di, u\u0161i, \u00fasta, srdce alebo mozog a nemaj\u00fa kosti ani chrbticu, \u010do z nich rob\u00ed bezstavovcov.–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Nepotrebuj\u00fa srdce ani p\u013e\u00faca, preto\u017ee ich ko\u017ea je tak\u00e1 tenk\u00e1, \u017ee kysl\u00edk \u013eahko prech\u00e1dza do tela. Tento proces je zn\u00e1my ako dif\u00fazia.–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Taktie\u017e nepotrebuj\u00fa mozog a o\u010di, preto\u017ee maj\u00fa na ka\u017edom ch\u00e1padle s\u00fabor nervov, ktor\u00e9 zis\u0165uj\u00fa tak\u00e9 veci ako teplotu vody, maj\u00fa bunky citliv\u00e9 na svetlo. Med\u00faza potom reaguje na tieto podnety ako reflex a\u00a0orientuje sa pod\u013ea toho.–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Med\u00fazy s\u00fa m\u00e4so\u017erav\u00e9 a \u017eivia sa plankt\u00f3nom (mal\u00e9 organizmy, ktor\u00e9 \u017eij\u00fa vo vode), mal\u00fdmi rybkami, k\u00f4rovcami a niekedy aj in\u00fdmi med\u00fazami.–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Niektor\u00e9 med\u00fazy m\u00f4\u017eu \u017eiari\u0165 v\u00a0tme. Mnoho med\u00faz m\u00e1 bioluminiscen\u010dn\u00e9 org\u00e1ny, ktor\u00e9 vy\u017earuj\u00fa svetlo. Toto svetlo im m\u00f4\u017ee pom\u00f4c\u0165 mnoh\u00fdmi r\u00f4znymi sp\u00f4sobmi, ako je pri\u0165ahovanie koristi alebo rozpt\u00fdlenie pred\u00e1torov.–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Ak je med\u00faza rozrezan\u00e1 na dva kusy, k\u00fasky med\u00fazy sa m\u00f4\u017eu regenerova\u0165 a vytvori\u0165 dva nov\u00e9 organizmy. Podobne, ak je med\u00faza zranen\u00e1, m\u00f4\u017ee sa klonova\u0165 a potenci\u00e1lne produkova\u0165 stovky potomkov.–\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 V\u00a0spolo\u010denstv\u00e1ch med\u00faz s\u00fa bu\u010f v\u0161etky samce alebo v\u0161etky samice. Obidve pohlavia uvo\u013e\u0148uj\u00fa spermie i vaj\u00ed\u010dka.                                                                                                                                                                                                                                                                                                                                                                                        4.6\/5 - (14 votes)        "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"\u00da\u017easn\u00e9 fakty o med\u00fazach","item":"https:\/\/www.osibus.sk\/uzasne-fakty-o-meduzach\/#breadcrumbitem"}]}]