Search results
Results From The WOW.Com Content Network
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, sexual attraction or libido, although erections can also be spontaneous.
The cavernous nerves are post-ganglionic parasympathetic nerves that facilitate penile erection and clitoral erection. [1] They arise from cell bodies in the inferior hypogastric plexus where they receive the pre-ganglionic pelvic splanchnic nerves (S2-S4). In the penis, there are both lesser cavernous nerves and a greater cavernous nerve.
Erection is largely a parasympathetic response, so the sympathetic action of pseudoephedrine may serve to relieve this condition. Pseudoephedrine is an alpha-agonist agent that exerts a constriction effect on smooth muscle of corpora cavernosum, which in turn facilitates venous outflow.
Parasympathetic stimulation removes the tonic state and allows vasodilation of the intimal cushion. Blood now pools in the corpora cavernosa, resulting in erection. The valves prevent backflow in the now-tortuous route through the cavernosa. This parasympathetic relaxation response is mediated by a release of nitric oxide (NO).
Injury to the prostatic plexus (during prostatic resection for example) is highly likely to cause erectile dysfunction. It is because of this relationship that surgeons are careful to maintain the integrity of the prostatic fascial shell so as to not interrupt the post-ganglionic parasympathetic fibers that produce penile erection.
There are several reasons why urinating with an erection is such a struggle, but there are some ways to overcome it.
This process is controlled by the autonomic nervous system with parasympathetic dominance being associated with congestion and sympathetic with decongestion. [5] [4] The time of one cycle may vary greatly between individuals, with Kahana-Zweig et al. finding a range between 15 minutes and 10.35 hours though the average was noted as 2.15 ± 1.84 ...
Keep in mind, though, that waiting too long can decrease sexual desire, increase the chances of premature ejaculation, and reduce the intensity of erections, according to Elist.