Foreskin
This website contains close-up photographs of the normal, natural, intact adult male foreskin.

The penis and foreskin: Preputial anatomy and sexual function
Numerous articles on penile preputial anatomy and physiological function including immunological functions, innervation, vascularity, sexual function, and the effects of circumcision.

Male Sexual Anatomy - The Foreskin
The Foreskin - What is it and how it works - Pictures and Diagrams - Circumcision Issues - Foreskin Restoration - The Intact Penis... Need to brush up on your anatomy of what the foreskin is and how it works? This site contains explicit pictures with all the details, along with guidelines on caring for intact children.

Three Zones of Penile Skin - Photographs
By John A Erickson - Clearly defines outer shaft skin, outer preputial (foreskin) skin and inner preputial (foreskin) mucous membrane.

Anatomy of the Penis and Mechanics of Intercourse
An Illustrated Guide - This page presents information that most parents are not aware of at the time they make the circumcision decision. Doctors usually do not provide this information.

Aesthetics of the Foreskin
by Victor Doiteau, M.D.

Not "just a flap of skin"
Animation illustrating the size of a normal foreskin when unfolded, and the number of nerve endings it contains.

17 Functions of the Foreskin
17 functions of the normal male foreskin

Anatomy and Functions of the Male Foreskin
To understand the function of the prepuce, it is necessary to understand the function of the penis. While it is commonly recognized that the penis has two functions - urination and procreation - in reality, it is essential only for procreation, since it is not required for urination.

The Ridged Band: Specialized Sexual Tissue
Information about the anatomy and function of the prepuce by researcher Dr. John R. Taylor. [English and French]

Functions of the Foreskin
by George C. Denniston MD Presented at The Second International Symposium on Circumcision [1991] Article discusses the development and physiological functions of the male prepuce.

Anatomical parts lost in male circumcision
The "What Is Lost?" list contains itemized anatomical parts, innervation, and functions lost when the foreskin is amputated.

CIRP: Normal Development of the Prepuce
Explaining the normal growth and development of the prepuce from birth through age of 18 years.

Male Sexual Anatomy - The Foreskin
Information about the male foreskin and how it works through pictures and diagrams.