Erectile dysfunction is the chronic failure to achieve or maintain an erection firm enough for sexual intercourse. It is either a chronic inability not to be able to get an erection. One evening does not qualify as erectile dysfunction.
It used to be more commonly referred to as impotence, but the medical community now prefers the term erectile dysfunction. ED is relatively common especially as many ages, but sexual dysfunction should never be considered normal despite being common at any age. As you can imagine erectile dysfunction has a significant impact on the quality of life for both suffers and their partners. ED is different from other sexual issues such as lack of libido or sexual desire or difficulty ejaculating.
To achieve an erection, the following actions must occur:
- There must be a stimulus from the brain, in other words, there must be some kind of the sexual interest. And this common aids into chemical cascades.
- The nerves that go from the brain down the spinal cord and down to the penis must function properly
- the arterial blood supply to the penis must be adequate in other words enough blood must be able to fill up the penis
- the veins within the penis must be able to ”trap” the blood that keeps the erection hard.
If there is something interfering with any of this, whether it be the accident, an injury, a disease, a psychological issue than a firm erection is prevented.
Some of the primary structures of the penis include the dorsal vein and the various cavernous arteries. an erection happens when two tubular structures that go the length of the penis (corpus cavernosal) become engorged with blood.
You can see the two upper corpora cavernosa that partially separated by a septum. There are lots of cavernosal spaces, and they are fed by cavernosal arteries.
The corpus spongiosum that is a single tube located below the corpora cavernosa, that contain the urethra, may also become engorged with blood. But the corpus spongiosum some contributes less to a firm erection then do the corpora cavernosa. The urethra is in the middle of the corpus spongiosum, And this explains why it is very difficult for a man to urinate while he has an erection.
Basically inches of the urethra it makes it difficult for the bladder to empty during ejaculation because of the smooth muscle contractions. Semen is able to exit the urethra despite an erection. Ejaculation doesn’t require an erection.