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Monday 20 July, 2015 | RSS Feed

The scientific revelation What is the erect penis

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The penis blood running processPenile blood vessels that itself and the mechanism of the supply of blood flow in penile erectile occupies an extremely important position, because the essence of penile erection is a response to a small vessels, the blood supply system out of order, of course can cause penile erection.Inside the penis artery branches are: white film is located on the back of the penis outside the penile dorsal artery, along the corpus cavernosum penis cavernous artery, and along the corpus spongiosum ventral to the urethra of two bulbourethral artery.At the end of these arteries branches, that is, ending spiral arteries in the small capillaries, which in turn directly Yu Haimian body cavity.Venous return has two pathways, superficial venous drainage of the whole corpus spongiosum back (including the glans penis and urethra ball) blood, deep venous drainage corpora cavernosa blood back.Dominant penile erectile sponge body cavityThree sponge body cavity to exercise the function of penile erectile tissue, the glans penis and urethra cavernosum volume, and a pair of corpus cavernosum provide hardness.By called trabecular fibers and smooth muscle tissue separated into many irregular clearance, also called blood sinus, sinus surface covered with endothelial gap.Located in the middle of the cavernous sinus gap is bigger, the penis is highly congested, 1 ~ 9 millimeters in diameter, relaxation is not obvious gap.Every blood sinus has deep artery and vein and its direct output, output and deep artery and vein and direct transportation between teams, called arteriovenous shunt system.Output in deep artery, vein and the tube wall of arteriovenous shunt is valves smooth muscle plica, erectile nerve regulation.When nerve impulse acting on the fold, sinus deep artery completely open, and output the wall part of vein and arteriovenous traffic closed, so the blood into the sinus increase, lead to sponge filling and erection.Then, by the deep vein blood flow decreases, and selectively accumulate within the cavernous sinus, spongy tissue inside the smooth muscle relaxation, blood sinus enlargement, by full of blood and penis size also increased obviously, but not white membrane infinite enlargement, finally to achieve the required hardness in the erect penis.Plays a main role in erection is a function of the arteries, but inside the penis vein valve part closed and limit the venous blood backflow is also very important.If the close blood discharge system is not complete, intravenous discharge flow is too large, impotence, formed by the erection can decline.In addition, arteriovenous traffic when erect not to close also can cause impotence.After ejaculation the penis of the changes in the bodyAfter ejaculation, because the sympathetic nerve fibers in hypogastric nerve excitement, inside the penis artery contraction, sinus deep thickening of the arterial wall smooth muscle fold, forming part of the closed valve samples, sinus blood flow decreased, the output vein traffic completely open, increased venous reflux, weak penis quickly.Long health net warm prompt: the penis as a surprisingly natural hydraulic mechanical equipment, erection and retreat of physiological reaction, characterized by an organ under the specific capacity of inflow and outflow of hemodynamic changes.According to the size of the penis, erect when the increase in blood volume of about 80 ~ 200 ml.Penile erection, the penis artery expansion, enter the blood flow to the penis more than eight times larger than relaxed.When up to 120 ml/minute (sponge body pressure increased to 75 mm hg) cause an erection, and once after erection maintain an erection of blood flow perfusion rate around 60% of the original, or 70 ml/min, which showed that the vein is not fully closed.If the vein can completely shut down, can cause the penis edema and cyanosis, rather than a true erection.





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