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Minggu, 28 November 2010

Fakta Penyebab Mengapa Pria Punya Puting Susu


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Pernahkah Anda bertanya mengapa pria memiliki puting susu? Puting susu dimiliki oleh semua gender dan yang jelas membedakannya hanyalah rahim.

Apapun gender Anda, semua orang berawal dari rahim wanita. Selama beberapa minggu pertama perkembangan embrio akan menggunakan “cetak biru wanita,” mulai dari organ reproduksi hingga puting susu.

Namun, setelah sekitar 60 hari, hormon testosteron muncul, aktivitas genetik sel pada alat kelamin dan otak pun berubah. Namun, saat itu juga papila mammae (puting) akan tetap ada.

http://solocybercity.files.wordpress.com/2010/08/mirip-perempuan.jpg
http://images.detik.com/content/2010/02/03/766/pria-payudara-(comicbookmovie)-dalam.jpg
Jadi,
pertanyaan sebenarnya adalah mengapa puting susu pria memiliki saraf dan pembuluh darah?
Pada mamalia jantan, banyak formasi puting susu terhambat oleh hormon, namun tak begitu pada manusia. Apakah manusia prasejarah merawat anak mereka? Karena kurangnya bukti maka menunjukkan tidak.

Kemungkinan besar, adanya puting susu pada pria dewasa karena berhasil lolos dari seleksi alam.


http://sphotos.ak.fbcdn.net/hphotos-ak-ash2/hs446.ash2/71934_454593017035_709747035_5620744_555377_n.jpg

sumber http://unic77.blogspot.com/2010/11/mengapa-pria-punya-puting-susu.html

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