Erection
July 21, 2008 – 9:03 pmErection - is a physiological phenomenon is a complex process neyrovaskulyarny. He closely collaborate central and peripheral nervous systems, smooth muscles sexual member.
Central nervous system collects, analyzes and then all the information comes from various senses (sight, hearing), parasympathetic nervous system ensures smooth muscle relaxation of sexual member. In connection with the smooth muscle relaxation expanding jaws, the flow of blood increases.
Without full relaxation is not possible further erection. Very important role in causing erection plays so-called “muscular mechanism”. Its essence is to activate the cross-Striped muscles (ischium cavernous-and-sponge lukovichno muscles). Their decline has led to compression legs cavernous phone sex member, which prevents drain blood from them. At the core of erection are vascular changes that can be divided into phases:
latent phase - this smooth muscle relaxation of arteries, cavernous bodies, resulting in a rapid influx of blood to penis.
swelling - as the flow of blood pressure inside increases sexual member, extendable and he starts to grow.
full erection - characterized by the fact that the inflow of arterial venous outflow equals.
rigidity of erection - firmness sexual member in this phase is carried out by reducing cross-Striped muscles, resulting in the inflow of arterial blood stops.
detumestsentsii - at this stage occurs transversely striped relaxation of muscles, reducing smooth muscle, resulting in the blood is squeezed from sinusovyh spaces.
