Circumcision Information and Resource Page (CIRP) provides information relating to the penis and the effects of circumcision. This page illustrates the intact penis and how the foreskin functions. The page also illustrates a circumcised penis. The gliding mechanism of an intact penis is also illustrated, along with information on the effects of circumcision on sexual intercourse.

The Embryo Development web page graphically shows the external genital changes in fetus development. A comparison is made between male and female genital development of the fetus.

Study published in BJUI (British Journal of Urology International), Volume 99, Issue 4, Pages 864-869 (March 2007). This is the Sorrells study. The Sorrels study is remarkable because it used objective measurements to determine fine-touch sensitivity of various parts of the intact penis and the circumcumcised penis, showing that circumcision removes the most sensitive parts of the penis.

Watch a YouTube video of Dr. Sorrells discussing the study and his results.

Circumstitions.com page illustrating the anatomy of an intact penis. The illustration is interactive and clicking on parts of the penis will present information on that part. The page has links to an animated illustration of the foreskin retracting and extending. There is also a link to illustrations of the embrionic development of the male and female genitals.

An article in eMedicine about pearly penile papules (PPP). Pearly penile papules are small dome-shaped skin-colored papules that often are located on the sulcus or corona of the glans penis. Commonly, pearly penile papules are arranged circumferentially in one or more rows. They are considered to be a normal feature and are harmless.

Study published in British Journal of Urology (BJU Int.) 2009 Apr; 103(8):1096-103. Epub 2009 Feb 24. The study used a self-reported questionaire and reports on various genital and nongenital areas in terms of erotic sensitivity for intact men (uncircumcised).

A pictorial guide showing the three zones of the intact penis outer covering. The shaft skin, the outer foreskin, and the inner foreskin make up the three sonze. The inner foreskin is almost as long as the shaft of the penis. The pictures are shown in sequence as the foreskin is retracted.

Penis a study of the Human Penis DR JEFF Productions USA

A YouTube video about the penis. The video focuses on the intact (uncut) penis with some information on the circumcised penis. YouTube has age restricted the video because it shows the male sex organ. You may have to log onto YouTube and acknowledge that you are of age to view the video.

This video is from the UK company that makes the SenSlip, a manufactured artificial foreskin designed to protect the mucosa so it will shed the keratinized skin. The SenSlip is a fast fix to de-keratinize the penis. Using the SenSlip is useful to quickly show men the benefits of covering the penis with a foreskin by letting them experience more sensation. Many men decide that it is worth the time and effort to restore their foreskin (growing new skin) by applying tension.