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Human Anatomy and Physiology

I'm 19 years old and is it normal if your penis is 5 inches when erecrt and 3 inches when not erect?

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Wiki User
August 23, 2008 3:39AM

Yes, it is normal. Erections are controlled by involuntary muscles surrounding blood vessels exiting the penis. When relaxed, the vessels open and allow blood to flow freely. When stimulated, the muscles contract and the pressure of blood fills the erectile tissue and causes the penis to grow. The difference between an erect and non-erect penis varies for each man. A penis growing from 1" to 6" during an erection is more common than you might think. Of course the opposite holds true for men who have a 6" penis during periods of non-arousal. When stimulated, the penis does not get longer. It just becomes more rigid. Street-talk, school-rumors, and TV/movies perpetuate the myth of long penises at all times. "You are a grow-er, not a show-er"