I recently read an article and realized that I have never heard the whole truth about penile erection. Sure, try any anatomy book and you'll get the corpora cavernosa story with the blood filling it to achieve an erection, following the nervous stimuli.
Now that's all fine and good, but what I didn't know is the pressure inside the corpora cavernosa. Correct me if I'm wrong, but I think most men don't know that the pressure inside the penis during erection is the blood pressure of the body. Not more that that, as one might imagine. That is achieved simply by allowing the blood to flow inside the penis. There is no extra internal pump to fill the penis with blood.
The question I have is how is that achieved. As far as the anatomy courses say, I didn't find any valve that blocks the access of blood from the main blood vessels to the penis. Although, the logic says there should be one, otherwise the blood would flow all the time through the penis, maintaining it in a perpetual erect state.
Did anybody find the erection mechanism explained properly, taking into account the aforementioned?
Now that's all fine and good, but what I didn't know is the pressure inside the corpora cavernosa. Correct me if I'm wrong, but I think most men don't know that the pressure inside the penis during erection is the blood pressure of the body. Not more that that, as one might imagine. That is achieved simply by allowing the blood to flow inside the penis. There is no extra internal pump to fill the penis with blood.
The question I have is how is that achieved. As far as the anatomy courses say, I didn't find any valve that blocks the access of blood from the main blood vessels to the penis. Although, the logic says there should be one, otherwise the blood would flow all the time through the penis, maintaining it in a perpetual erect state.
Did anybody find the erection mechanism explained properly, taking into account the aforementioned?