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<title>Зеница</title>
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<wx:section level="1" title="Зеница" id="wxsec1"><h1 class="pagetitle" id="wx1">Зеница</h1>

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<p id="wx10"><b id="wx11">Зеницата</b> е онази част от <a href="/wbg/%D0%9E%D0%BA%D0%BE" title="Око" wx:linktype="known" wx:pagename="Око" wx:page_id="62769" id="wx12">окото</a>, която се намира в средата на <a href="/wbg/%D0%98%D1%80%D0%B8%D1%81" title="Ирис" wx:linktype="known" wx:pagename="Ирис" wx:page_id="18526" id="wx13">ириса</a>. Тя изглежда черна, тъй като по-голямата част от навлизащата <a href="/wbg/%D0%A1%D0%B2%D0%B5%D1%82%D0%BB%D0%B8%D0%BD%D0%B0" title="Светлина" wx:linktype="known" wx:pagename="Светлина" wx:page_id="15391" id="wx14">светлина</a> се поглъща от тъканите вътре в окото.</p>

<p id="wx15">При <a href="/wbg/%D0%A7%D0%BE%D0%B2%D0%B5%D0%BA" title="Човек" wx:linktype="known" wx:pagename="Човек" wx:page_id="87591" id="wx16">хората</a> и при много <a href="/wbg/%D0%96%D0%B8%D0%B2%D0%BE%D1%82%D0%BD%D0%BE" title="Животно" wx:linktype="known" wx:pagename="Животно" wx:page_id="74738" id="wx17">животни</a> (но само малък процент от <a href="/wbg/%D0%A0%D0%B8%D0%B1%D0%B0" title="Риба" wx:linktype="known" wx:pagename="Риба" wx:page_id="30824" id="wx18">рибите</a>) големината на зеницата се контролира от рефлексно съкращаване и разширяване на ириса. По този начин се регулира интензивността на навлизащата светлина. Това се нарича още <a href="/wbg/%D0%97%D0%B5%D0%BD%D0%B8%D1%87%D0%B5%D0%BD_%D1%80%D0%B5%D1%84%D0%BB%D0%B5%D0%BA%D1%81" title="Зеничен рефлекс" wx:linktype="known" wx:pagename="Зеничен_рефлекс" wx:page_id="92113" id="wx19">зеничен рефлекс</a>.</p>

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<div style="margin-left: 37px;" id="wx23"><i id="wx24">Тази статия, свързана с <a href="/wbg/%D0%90%D0%BD%D0%B0%D1%82%D0%BE%D0%BC%D0%B8%D1%8F" title="Анатомия" wx:linktype="known" wx:pagename="Анатомия" wx:page_id="48074" id="wx25">анатомията</a>, е все още <a href="/wbg/%D0%A3%D0%B8%D0%BA%D0%B8%D0%BF%D0%B5%D0%B4%D0%B8%D1%8F:%D0%9C%D1%8A%D0%BD%D0%B8%D1%87%D0%B5" class="new" title="Уикипедия:Мъниче" wx:linktype="unknown" wx:pagename="Уикипедия:Мъниче" id="wx26">мъниче</a>. Можете да помогнете на Уикипедия, като я <a href="http://wbg/wbg/index.php?title=%D0%97%D0%B5%D0%BD%D0%B8%D1%86%D0%B0&amp;action=edit" class="external text" wx:linktype="external" rel="nofollow" id="wx27">редактирате</a> и я разширите.</i></div>
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<a href="/wbg/index.php?title=%D0%A1%D0%BF%D0%B5%D1%86%D0%B8%D0%B0%D0%BB%D0%BD%D0%B8:Categories&amp;article=%D0%97%D0%B5%D0%BD%D0%B8%D1%86%D0%B0" title="Специални:Categories" wx:linktype="known" wx:pagename="Специални:Categories" id="wx28">Категории</a>: <span dir="ltr" id="wx29"><a href="/wbg/%D0%9A%D0%B0%D1%82%D0%B5%D0%B3%D0%BE%D1%80%D0%B8%D1%8F:%D0%9C%D1%8A%D0%BD%D0%B8%D1%87%D0%B5%D1%82%D0%B0_%D0%B7%D0%B0_%D0%B0%D0%BD%D0%B0%D1%82%D0%BE%D0%BC%D0%B8%D1%8F" title="Категория:Мъничета за анатомия" wx:linktype="known" wx:pagename="Категория:Мъничета_за_анатомия" wx:page_id="116626" id="wx30">Мъничета за анатомия</a></span> | <span dir="ltr" id="wx31"><a href="/wbg/%D0%9A%D0%B0%D1%82%D0%B5%D0%B3%D0%BE%D1%80%D0%B8%D1%8F:%D0%90%D0%BD%D0%B0%D1%82%D0%BE%D0%BC%D0%B8%D1%8F" title="Категория:Анатомия" wx:linktype="known" wx:pagename="Категория:Анатомия" wx:page_id="26611" id="wx32">Анатомия</a></span></div>
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На други езици: <a href="http://ar.wikipedia.org/wiki/%D8%AD%D8%AF%D9%82%D8%A9" class="external" wx:linktype="interwiki" wx:pagename="ar:حدقة" id="wx33">العربية</a> | <a href="http://bn.wikipedia.org/wiki/%E0%A6%AA%E0%A6%BF%E0%A6%89%E0%A6%AA%E0%A6%BF%E0%A6%B2" class="external" wx:linktype="interwiki" wx:pagename="bn:পিউপিল" id="wx34">বাংলা</a> | <a href="http://ca.wikipedia.org/wiki/Pupil%C2%B7la" class="external" wx:linktype="interwiki" wx:pagename="ca:Pupil·la" id="wx35">Català</a> | <a href="http://da.wikipedia.org/wiki/Pupil" class="external" wx:linktype="interwiki" wx:pagename="da:Pupil" id="wx36">Dansk</a> | <a href="http://de.wikipedia.org/wiki/Pupille" class="external" wx:linktype="interwiki" wx:pagename="de:Pupille" id="wx37">Deutsch</a> | <a href="http://el.wikipedia.org/wiki/%CE%9A%CF%8C%CF%81%CE%B7_%28%CE%B1%CE%BD%CE%B1%CF%84%CE%BF%CE%BC%CE%AF%CE%B1%29" class="external" wx:linktype="interwiki" wx:pagename="el:Κόρη_(ανατομία)" id="wx38">Ελληνικά</a> | <a href="http://en.wikipedia.org/wiki/Pupil" class="external" wx:linktype="interwiki" wx:pagename="en:Pupil" id="wx39">English</a> | <a href="http://eo.wikipedia.org/wiki/Pupilo" class="external" wx:linktype="interwiki" wx:pagename="eo:Pupilo" id="wx40">Esperanto</a> | <a href="http://es.wikipedia.org/wiki/Pupila" class="external" wx:linktype="interwiki" wx:pagename="es:Pupila" id="wx41">Español</a> | <a href="http://eu.wikipedia.org/wiki/Begi-nini" class="external" wx:linktype="interwiki" wx:pagename="eu:Begi-nini" id="wx42">Euskara</a> | <a href="http://fi.wikipedia.org/wiki/Pupilli" class="external" wx:linktype="interwiki" wx:pagename="fi:Pupilli" id="wx43">Suomi</a> | <a href="http://fr.wikipedia.org/wiki/Pupille" class="external" wx:linktype="interwiki" wx:pagename="fr:Pupille" id="wx44">Français</a> | <a href="http://gl.wikipedia.org/wiki/Pupila" class="external" wx:linktype="interwiki" wx:pagename="gl:Pupila" id="wx45">Galego</a> | <a href="http://it.wikipedia.org/wiki/Pupilla_%28anatomia%29" class="external" wx:linktype="interwiki" wx:pagename="it:Pupilla_(anatomia)" id="wx46">Italiano</a> | <a href="http://ja.wikipedia.org/wiki/%E7%9E%B3%E5%AD%94" class="external" wx:linktype="interwiki" wx:pagename="ja:瞳孔" id="wx47">日本語</a> | <a href="http://la.wikipedia.org/wiki/Pupilla" class="external" wx:linktype="interwiki" wx:pagename="la:Pupilla" id="wx48">Latina</a> | <a href="http://lt.wikipedia.org/wiki/Vyzdys" class="external" wx:linktype="interwiki" wx:pagename="lt:Vyzdys" id="wx49">Lietuvių</a> | <a href="http://nl.wikipedia.org/wiki/Pupil_%28oog%29" class="external" wx:linktype="interwiki" wx:pagename="nl:Pupil_(oog)" id="wx50">Nederlands</a> | <a href="http://no.wikipedia.org/wiki/Pupill" class="external" wx:linktype="interwiki" wx:pagename="no:Pupill" id="wx51">Norsk (bokmål)</a> | <a href="http://pl.wikipedia.org/wiki/%C5%B9renica" class="external" wx:linktype="interwiki" wx:pagename="pl:Źrenica" id="wx52">Polski</a> | <a href="http://pt.wikipedia.org/wiki/Pupila" class="external" wx:linktype="interwiki" wx:pagename="pt:Pupila" id="wx53">Português</a> | <a href="http://ro.wikipedia.org/wiki/Pupil%C4%83" class="external" wx:linktype="interwiki" wx:pagename="ro:Pupilă" id="wx54">Română</a> | <a href="http://ru.wikipedia.org/wiki/%D0%97%D1%80%D0%B0%D1%87%D0%BE%D0%BA" class="external" wx:linktype="interwiki" wx:pagename="ru:Зрачок" id="wx55">Русский</a> | <a href="http://simple.wikipedia.org/wiki/Pupil_%28eye%29" class="external" wx:linktype="interwiki" wx:pagename="simple:Pupil_(eye)" id="wx56">Simple English</a> | <a href="http://sk.wikipedia.org/wiki/Zrenica" class="external" wx:linktype="interwiki" wx:pagename="sk:Zrenica" id="wx57">Slovenčina</a> | <a href="http://sl.wikipedia.org/wiki/Dijak" class="external" wx:linktype="interwiki" wx:pagename="sl:Dijak" id="wx58">Slovenščina</a> | <a href="http://sv.wikipedia.org/wiki/Pupill" class="external" wx:linktype="interwiki" wx:pagename="sv:Pupill" id="wx59">Svenska</a> | <a href="http://yi.wikipedia.org/wiki/%D7%90%D7%95%D7%99%D7%92_%D7%90%D7%A4%D7%A2%D7%9C" class="external" wx:linktype="interwiki" wx:pagename="yi:אויג_אפעל" id="wx60">ייִדיש</a> | <a href="http://zh.wikipedia.org/wiki/%E7%9E%B3%E5%AD%94" class="external" wx:linktype="interwiki" wx:pagename="zh:瞳孔" id="wx61">中文</a></div>
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