News tagged with reproductive biology

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Finger ratio points to penile length

The ratio between the second and fourth digits is linked to stretched penile length according to a study published online this week in Asian Journal of Andrology. This finding suggests that digit ratio can predict adult ...

Jul 05, 2011
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Eunuchs outlive other men

Castrated men living in Korea centuries ago outlived other men by a significant margin. The findings, reported in the September 25 issue of Current Biology, suggest that male sex hormones are responsible for shortening the li ...

Sep 24, 2012
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Sex organ

A sex organ, or primary sexual characteristic, as narrowly defined, is any of the anatomical parts of the body which are involved in sexual reproduction and constitute the reproductive system in a complex organism; in mammals, these include:

The Latin term genitalia, sometimes anglicized as genitals and genital area, is used to describe the externally visible sex organs, known as primary genitalia or external genitalia: in males the penis, in females the clitoris and vulva.

The other, hidden sex organs are referred to as the secondary genitalia or internal genitalia. The most important of these are the gonads, a pair of sex organs, specifically the testes in the male or the ovaries in the female. Gonads are the true sex organs, generating reproductive gametes containing inheritable DNA. They also produce most of the primary hormones that affect sexual development, and regulate other sexual organs and sexually differentiated behaviors.

A more ambiguously defined term is erogenous zone, subjectively, any portion of the body that when stimulated produces erotic sensation, but always prominently including the genitalia.

This text uses material from Wikipedia licensed under CC BY-SA