Question

Penis

How does the penis become erect?

A Answers (1)

  • AMichael Roizen, MD, Internal Medicine, answered
    During stimulation, the muscles around the arteries in the penis relax. That relaxation happens so that blood can be absorbed by a spongy structure on the top of the penis called the corpus cavernosum. After the blood rushes in like a tailback breaking for the end zone, the veins in the penis clamp down to keep that blood trapped in the penis. And voila! We've got liftoff, Houston.

    If those arteries are inflamed and/or clogged, then you don't have proper blood flow. And that means you don't have enough nitric oxide to open up your arteries, so you can't get an erection because you can't get blood into your penis. Plus, without an engorged penis, the veins that drain the blood don't kink off, so whatever meager blood enters the organ quickly spills back out.

    That's why erectile problems, for the most part, aren't manhood problems or mental problems. They're plumbing problems that require you not only to be turned on but to have the right biological faucets turned on as well.
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