Circumcised and Uncircumcised Penis Anatomy

The penis has two basic parts: the shaft and the head. Learn more about the anatomy of the penis here.

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The penis has two basic parts: the shaft and the head. The shaft attaches to the pubic bone and is made of erectile tissue, when sexually aroused this tissue fills with blood and the penis gets hard. The head of the penis (also called the “glans”) is at the end of the shaft. On an uncircumcised penis, the head is covered by foreskin which can be pulled back, on a circumcised penis the foreskin has been removed and the head is exposed. The tube with the hole at the end of the penis is the urethra. Semen leaves the body through this hole when a person has an orgasm and ejaculates (urine also leaves the body from this hole, but not at the same time!)

There are a lot of nerves in the penis, which means is can feel great to be touched. The head of the penis is the most sensitive part for the majority of people. The penis can be stimulated by wrapping the hand around and rubbing up and down (as masturbation, or with a partner), by using the mouth to gently lick or suck, by using a sex toy designed for the penis, or during penetrative sex. Whatever techniques you’re using - lubricant is your friend! Lube makes it feel better, helps sex last longer, and you’re less likely to get friction burn!

It is common for people to worry about the size of their penis since there is a lot of misinformation about penis size. People who have only seen other penises in porn might think theirs is too small, but most penises in porn are bigger than average, so that’s not a helpful comparison. So, how big is the average penis? The average length for an erect penis is 5¼ inches (13-14cm), and the average circumference (size around) for an erect penis is 4⅗ inches (11-12cm).

Condoms are one of the best ways to protect against sexually transmitted infections and unplanned pregnancy. Take the time to try different sizes, shapes and brands of condoms to find the one that feels best for you, or your partner’s, penis. Having condoms that fit right makes all the difference!

Myths and facts

Setting the record straight.

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