The male genital system consists of both external and internal parts. The external male genitalia include the penis, urethra, and scrotum. The internal male genitalia include the seminal vesicle, ...

Scientists are learning more and more about human biological variation, including of sex characteristics. But images of the human body in anatomy remain mostly muscular, white, and male with limited ...

Using life-sized digital humans, researchers reveal how genital size subtly shapes attraction and rivalry, offering new insight into why human male anatomy is so evolutionarily distinctive. Image ...

The most detailed neuroanatomical study of the penis to date has found that its primary erogenous zone is the frenular delta, an area that has long been left out of anatomy textbooks and surgical ...

Predation can lead to the evolution of defensive devices in prey animals. Genitalia, which are used for mating between males and females, have rarely been considered to function as an important ...