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* Erection requires that blood be trapped within the cavernous sinus of the penis.
 
* Erection requires that blood be trapped within the cavernous sinus of the penis.
 
* Increased blood flow to the penis is brought about by vasodilation of the arterioles supplying it.
 
* Increased blood flow to the penis is brought about by vasodilation of the arterioles supplying it.
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== Erection of the Fibroelastic Penis ==
 
== Erection of the Fibroelastic Penis ==
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