“Anatomy Of A Penis”
Of all the things most critical to a man and often least understood, the penis has to rank up there with. . . well, umm, not much else. As long as it’s working, men aren’t usually too excited about the specifics behind the model, as it were. Understanding the anatomy though can certainly shed some light on not only how things work, but also what might lead to it malfunctioning, as it were. This article will give the reader a decent understanding of the anatomy of a penis.
The penis is one of many muscles in the body, supported by even more muscles that hold the penis in place, both when flaccid and when erect. As a muscle, the penis is very vascular and has, like other appendages in the body, both a vein and an artery running through it. The cavernous artery carries blood away from the heart and the dorsal vein carries blood back to the heart. The tunica encircles the entire penis, regulating when the blood is to be increased into the penis. Interestingly, it is the tunica that keeps everything together, expanding to a specific set point and no further. When that set point has been reached, the penis is fully erect.
Most erectile dysfunction issues occur when blood supply to the penis has been compromised. This doesn’t usually happen because of a malfunction of the cavernous artery or the dorsal vein, although an overall reduction in blood supply, through something like arteriolosclerosis can lead to impotence. If blood supply were truly cut off, we would get gangrene. (Not a pretty picture.) What usually happens is the blood gets into the penis because nitric oxide makes the blood flow in when we are aroused, but the penis will not stay erect because the blood rushes back out of the corpora cavernosa, a spongy like materials that surrounds the urethra.
The urethra is centermost in the penis, the passage way for urine and, ultimately ejaculate. During arousal and erection, the prostate gland prohibits the expulsion of anything other then semen by squeezing the urethra shut. All of these parts are encased in muscle, leading to the glans or the head of the penis, which is not, uncoincidentally, the most sensitive part of the penis. The shaft is not, however, due in part to the great amount of pressure caused by the blood flow into the cavernosa.
Approximately 77 percent of all men in the US are circumcised, according to the Circumcision Reference Library. While the dynamics of an uncircumcised penis are a little different, the difference is superficial at most. An uncircumcised penis additionally has a foreskin which was an evolutionary protection for the penis and is comprised mostly of skin which retracts when the penis is erect.
Ultimately, the penis has a very simple design, made mostly of muscle and the veins and arteries to sustain them. Because of its simplicity, there is very little that can go wrong with the system and the thing that impedes its function most frequently is a disruption in its blood supply or a malfunctioning of the prostate, both of which can be remedied.
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