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Penis erection stages clip
An erection requires a healthy mind-body "team effort" led by the brain. Upon receiving signals from the brain, the blood vessels, nerves, and hormones work together to cause and maintain an erection. If nothing is causing a man to become aroused, then his body's erection "team" of brain, nerves, blood vessels, and hormones won't begin working to cause an erection. The amount of blood flowing into the penis's spongy chambers corpora cavernosa and corpus spongiosum equals the amount flowing out.
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File:Complete Penile Erection Process.ogv
Anatomy of penis and physiology of erection
The molecular and clinical understanding of erectile function continues to gain ground at a particularly fast rate. Intensive research has yielded many advances. The understanding of the nitric oxide pathway has aided not only in the molecular understanding of the tumescence but also aided greatly in the therapy of erectile dysfunction. As a man ages or undergoes surgery, preventative therapies to preserve erectile dysfunction have begun. All clinical interventions derived their beginning in a full anatomical, molecular, and dynamic knowledge base of erectile function and dysfunction. In this chapter the components of erectile function will be explained. The penile erectile tissue, specifically the cavernous smooth musculature and the smooth muscles of the arteriolar and arterial walls, plays a key role in the erectile process.
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Category:Videos of penile erection
An erection clinically: penile erection or penile tumescence is a physiological phenomenon in which the penis becomes firm, engorged, and enlarged. Penile erection is the result of a complex interaction of psychological, neural, vascular, and endocrine factors, and is often associated with sexual arousal or sexual attraction , although erections can also be spontaneous. The shape, angle, and direction of an erection varies considerably in humans. Physiologically, erection is triggered by the parasympathetic division of the autonomic nervous system , causing the levels of nitric oxide a vasodilator to rise in the trabecular arteries and smooth muscle of the penis. The arteries dilate causing the corpora cavernosa of the penis and to a lesser extent the corpus spongiosum to fill with blood ; simultaneously the ischiocavernosus and bulbospongiosus muscles compress the veins of the corpora cavernosa restricting the egress and circulation of this blood.
Error: This is required. Error: Not a valid value. A persistent, prolonged erection of the penis that will not go down is called priapism.