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Erection - Anatomy & Physiology (view source)
Revision as of 11:23, 10 July 2008
, 11:23, 10 July 2008→Sensory Input and Local Vascular Response
'''''Local Vascular Component'''''
'''''Local Vascular Component'''''
* When corporal smooth muscles relax because of cGMP, resistance to blood flow by penile arterioles and '''corporal sinusoids''' decreases.
* Blood flow to the penis triples or quadruples.
* When erection occurs, sinusoid pressure is so great that '''emissary veins''' are collapsed.
** Venous outflow blocked
* Penile erection maintained for as long as vasodilation of corporal smooth muscle takes place.
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