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What does an erection require?

Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)
Well, there's a lot more to getting an erection than meets the eye. A good, firm erection requires the brain and the body to be on same page. It all starts in the brain—which some have called the biggest sexual organ in the body. Once aroused, your brain sends signals through your central nervous system to fill the penis with blood. When your organ is filled with blood and it stays there—not always an easy feat—you can maintain an erection. Breakdowns or work stoppages in any of these areas can lead to erectile dysfunction (ED), or the inability to get or maintain an erection during sex. If you suffer from ED, talk with your doctor, who has up-to-date treatments for it.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.