{"id":1446,"date":"2025-06-01T00:14:03","date_gmt":"2025-05-31T22:14:03","guid":{"rendered":"https:\/\/www.cestypsychotroniky.cz\/?p=1446"},"modified":"2025-09-15T01:20:05","modified_gmt":"2025-09-14T23:20:05","slug":"proc-ma-clovek-dlouhy-penis","status":"publish","type":"post","link":"https:\/\/www.cestypsychotroniky.cz\/index.php\/2025\/06\/01\/proc-ma-clovek-dlouhy-penis\/","title":{"rendered":"Pro\u010d m\u00e1 \u010dlov\u011bk dlouh\u00fd penis?"},"content":{"rendered":"

V\u011bdci zjistili d\u016fvody zv\u011bt\u0161en\u00ed mu\u017esk\u00fdch pohlavn\u00edch org\u00e1n\u016f.<\/strong>
\nZd\u00e1 se, \u017ee penisy na\u0161ich opi\u010d\u00edch p\u0159edk\u016f, kte\u0159\u00ed sotva slezli ze strom\u016f, byly v\u0161echny mal\u00e9, a ne\u00fam\u011brn\u00e9 k velikosti cel\u00e9ho tvora. Stejn\u011b jako u na\u0161ich nejbli\u017e\u0161\u00edch lidsk\u00fdch p\u0159\u00edbuzn\u00fdch, prim\u00e1t\u016f. Nen\u00ed to na prvn\u00ed pohled z\u0159ejm\u00e9.<\/p>\n

Obrov\u0161t\u00ed goril\u00ed samci jsou do o\u010d\u00ed bij\u00edc\u00edm p\u0159\u00edkladem. P\u0159\u00edroda je \u201eodm\u011bnila\u201c n\u011b\u010d\u00edm neuv\u011b\u0159iteln\u00fdm – 3 centimetry d\u00e9lky v erekci. Ostatn\u00ed lidoopi se tak\u00e9 nemaj\u00ed \u010d\u00edm chlubit: \u0161impanzi a orangutani \u2013 8 \u2013 8,5 cm. \u0160impanzi a bonobov\u00e9 jsou zvykl\u00ed sed\u011bt s pokr\u010den\u00fdma nohama, co\u017e na anatomick\u00e9 \u00farovni napom\u00e1h\u00e1 \u00fasp\u011b\u0161n\u00e9mu doru\u010den\u00ed spermi\u00ed b\u011bhem kopulace.<\/p>\n

U Homo sapiens je to n\u011bco \u00fapln\u011b jin\u00e9ho. Podle v\u011bdeck\u00fdch \u00fadaj\u016f je pr\u016fm\u011brn\u00e1 d\u00e9lka jeho penisu 13 centimetr\u016f. V populaci se samoz\u0159ejm\u011b vyskytuj\u00ed mikropenisy, dokonce men\u0161\u00ed ne\u017e u \u0161impanz\u016f. Jsou to v\u0161ak odchylky od normy.<\/p>\n

V\u011bdci se dohaduj\u00ed o p\u0159\u00ed\u010din\u00e1ch a p\u0159edkl\u00e1daj\u00ed r\u016fzn\u00e9 hypot\u00e9zy. Britsk\u00fd v\u011bdec Simon Underdown, profesor biologick\u00e9 antropologie na Oxford Brookes University, ned\u00e1vno navrhl vlastn\u00ed hypot\u00e9zu.<\/p>\n

\"\"<\/p>\n

Z profesorova vysv\u011btlen\u00ed vypl\u00fdv\u00e1: na\u0161im vzd\u00e1len\u00fdm p\u0159edk\u016fm se zv\u011bt\u0161ila relativn\u00ed velikost rozmno\u017eovac\u00edch org\u00e1n\u016f pot\u00e9, co se postavili na dv\u011b nohy (bipedalismus).<\/p>\n

Lid\u00e9 se pravd\u011bpodobn\u011b stali dvouno\u017eci, aby se p\u0159izp\u016fsobili africk\u00fdm travnat\u00fdm savan\u00e1m, uvolnili si ruce k pou\u017e\u00edv\u00e1n\u00ed a no\u0161en\u00ed n\u00e1stroj\u016f a zastra\u0161ili pred\u00e1tory.<\/p>\n

\u201eSelek\u010dn\u00ed tlak na ch\u016fzi po dvou noh\u00e1ch byl obrovsk\u00fd a trval miliony let,\u201c \u0159ekl profesor Underdown.<\/p>\n

Podle t\u00e9to teorie se v\u0161ak objevilo mnoho ‚vedlej\u0161\u00edch \u00fa\u010dink\u016f‘ toho, \u017ee jsme se stali dvounoh\u00fdmi – jedn\u00edm z nich je, \u017ee jsme si postupn\u011b vyp\u011bstovali v\u011bt\u0161\u00ed penisy, aby se zlep\u0161il p\u0159enos spermi\u00ed.<\/p>\n

To a n\u00e1sledn\u00e9 zm\u011bny v postoj\u00edch a zp\u016fsobech kopulace \u2013 to jsou podle v\u011bdce hlavn\u00ed p\u0159\u00ed\u010diny prodlou\u017een\u00ed.<\/p>\n

K \u010demu slou\u017e\u00ed penis? K reprodukci. K co nejefektivn\u011bj\u0161\u00edmu doru\u010den\u00ed genetick\u00e9ho materi\u00e1lu samce na ur\u010den\u00e9 m\u00edsto, kde se nevyhnuteln\u011b setk\u00e1 s genetick\u00fdm materi\u00e1lem samice. K tomuto \u00fa\u010delu pot\u0159ebovali dvouno\u017eci \u201en\u00e1stroj\u201c spr\u00e1vn\u00e9 velikosti – \u010dist\u011b z mechanick\u00fdch d\u016fvod\u016f. Jinak to ne v\u017edy fungovalo nejl\u00e9pe. Postupn\u011b se penis prodlu\u017eoval a\u017e do dne\u0161n\u00ed pr\u016fm\u011brn\u00e9 velikosti. Prost\u011b evoluce … Takov\u00e1 je Underdownova nekomplikovan\u00e1 hypot\u00e9za.<\/p>\n

\u201eJen si vzpome\u0148te, jak rychl\u00e9 je p\u00e1\u0159en\u00ed v\u011bt\u0161iny zv\u00ed\u0159at, kdy\u017e ho vid\u00edte v dokument\u00e1rn\u00edch filmech Davida Attenborougha,\u201c \u0159ekl profesor Underdown.<\/p>\n

Pro srovn\u00e1n\u00ed, lidsk\u00e1 postava je p\u0159irozen\u011b vyvinuta pro st\u00e1n\u00ed, ale \u00fahly pot\u0159ebn\u00e9 p\u0159i sexu jsou pon\u011bkud fyzicky nepohodln\u011bj\u0161\u00ed.<\/p>\n

To m\u016f\u017ee zhor\u0161ovat p\u0159enos spermi\u00ed, tak\u017ee se u lid\u00ed vyvinuly v\u011bt\u0161\u00ed penisy, aby se to kompenzovalo.<\/p>\n

\u201eP\u0159edpokl\u00e1d\u00e1 se, \u017ee k t\u011bmto zm\u011bn\u00e1m do\u0161lo zhruba p\u0159ed 2 miliony let s p\u0159\u00edchodem Homo erectus, tak\u017ee m\u016f\u017eeme p\u0159edpokl\u00e1dat, \u017ee neandrt\u00e1lci m\u011bli pravd\u011bpodobn\u011b stejn\u00e9 uspo\u0159\u00e1d\u00e1n\u00ed,\u201c dodal profesor Underdown.<\/p>\n

Podle akademika je tato teorie zalo\u017eena na ‚v\u0161eobecn\u011b p\u0159ij\u00edman\u00e9m ch\u00e1p\u00e1n\u00ed rozd\u00edl\u016f mezi n\u00e1mi a \u0161impanzi v d\u016fsledku bipedalismu.<\/p>\n

Mark Maslin, profesor paleoklimatologie na University College London, tvrd\u00ed, \u017ee lidsk\u00fd penis je relativn\u011b \u201eextr\u00e9mn\u011b tup\u00fd\u201c.<\/p>\n

\u201eNem\u00e1 boule, h\u0159ebeny, p\u0159\u00edruby, z\u00e1hyby ani \u017e\u00e1dn\u00e9 jin\u00e9 vzru\u0161uj\u00edc\u00ed rysy, kter\u00e9 maj\u00ed ostatn\u00ed prim\u00e1ti,\u201c napsal v \u010dl\u00e1nku pro The Conversation.<\/p>\n

Zaj\u00edmav\u00e9 je, \u017ee lidsk\u00e1 varlata jsou tak\u00e9 \u201epom\u011brn\u011b mal\u00e1\u201c ve srovn\u00e1n\u00ed s jin\u00fdmi \u017eij\u00edc\u00edmi prim\u00e1ty, jako jsou \u0161impanzi a bonobo.<\/p>\n","protected":false},"excerpt":{"rendered":"

V\u011bdci zjistili d\u016fvody zv\u011bt\u0161en\u00ed mu\u017esk\u00fdch pohlavn\u00edch org\u00e1n\u016f.<\/p>\n","protected":false},"author":1,"featured_media":404,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,8],"tags":[60],"class_list":["post-1446","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-souvislosti","category-veda","tag-clovek"],"_links":{"self":[{"href":"https:\/\/www.cestypsychotroniky.cz\/index.php\/wp-json\/wp\/v2\/posts\/1446","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cestypsychotroniky.cz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cestypsychotroniky.cz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cestypsychotroniky.cz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cestypsychotroniky.cz\/index.php\/wp-json\/wp\/v2\/comments?post=1446"}],"version-history":[{"count":1,"href":"https:\/\/www.cestypsychotroniky.cz\/index.php\/wp-json\/wp\/v2\/posts\/1446\/revisions"}],"predecessor-version":[{"id":1449,"href":"https:\/\/www.cestypsychotroniky.cz\/index.php\/wp-json\/wp\/v2\/posts\/1446\/revisions\/1449"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cestypsychotroniky.cz\/index.php\/wp-json\/wp\/v2\/media\/404"}],"wp:attachment":[{"href":"https:\/\/www.cestypsychotroniky.cz\/index.php\/wp-json\/wp\/v2\/media?parent=1446"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cestypsychotroniky.cz\/index.php\/wp-json\/wp\/v2\/categories?post=1446"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cestypsychotroniky.cz\/index.php\/wp-json\/wp\/v2\/tags?post=1446"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}