Comments on: Finally! The Ostrich Penis Provides the Answer to a Long-Standing Question http://blogs.discovermagazine.com/discoblog/2011/12/08/finally-the-ostrich-penis-provides-the-answer-to-a-long-standing-question/ Sat, 11 May 2013 22:50:00 +0000 hourly 1 http://wordpress.org/?v=3.4.2 By: Veronique Greenwood http://blogs.discovermagazine.com/discoblog/2011/12/08/finally-the-ostrich-penis-provides-the-answer-to-a-long-standing-question/#comment-25764 Veronique Greenwood Fri, 09 Dec 2011 17:31:00 +0000 http://blogs.discovermagazine.com/discoblog/?p=20257#comment-25764 Here's what Prum says about that flow: "It's the "sulcus". Just  a groove out of which the semen flows. Only mammals have an enclosed urethra (where the penis grows around to seal at the bottom to form a closed external tube. Reptile penises [and birds] just have a sulcus." Basically, the semen comes out of that hole and flows down the penis (you'll notice the groove going down its length). Works better as a semen delivery system if the penis is in something. That way, the vaginal wall provides the other half of the tube. Here’s what Prum says about that flow: “It’s the “sulcus”. Just  a groove out of which the semen flows. Only
mammals have an enclosed urethra (where the penis grows around to
seal at the bottom to form a closed external tube. Reptile penises [and birds]
just have a sulcus.”

Basically, the semen comes out of that hole and flows down the penis (you’ll notice the groove going down its length). Works better as a semen delivery system if the penis is in something. That way, the vaginal wall provides the other half of the tube.

]]> By: curious http://blogs.discovermagazine.com/discoblog/2011/12/08/finally-the-ostrich-penis-provides-the-answer-to-a-long-standing-question/#comment-25763 curious Fri, 09 Dec 2011 13:40:00 +0000 http://blogs.discovermagazine.com/discoblog/?p=20257#comment-25763 Is that what the ostrich penis normally looks like, or is that an insicion leaking lymph?  It's location off to one side just seems odd... Is that what the ostrich penis normally looks like, or is that an insicion leaking lymph?  It’s location off to one side just seems odd…

]]> By: Mark B http://blogs.discovermagazine.com/discoblog/2011/12/08/finally-the-ostrich-penis-provides-the-answer-to-a-long-standing-question/#comment-25762 Mark B Fri, 09 Dec 2011 03:35:00 +0000 http://blogs.discovermagazine.com/discoblog/?p=20257#comment-25762 Glad to see the happy ending. Glad to see the happy ending.

]]> By: Selena Sletten http://blogs.discovermagazine.com/discoblog/2011/12/08/finally-the-ostrich-penis-provides-the-answer-to-a-long-standing-question/#comment-25761 Selena Sletten Fri, 09 Dec 2011 01:43:00 +0000 http://blogs.discovermagazine.com/discoblog/?p=20257#comment-25761 Haha, I love the ending. Very funny Haha, I love the ending. Very funny

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