seen from United Kingdom
seen from China
seen from United States
seen from Bangladesh
seen from Singapore
seen from United States
seen from Belarus
seen from South Africa
seen from United States
seen from United States
seen from Russia
seen from China
seen from Australia
seen from United States
seen from United Kingdom
seen from United States
seen from China
seen from China
seen from United States
seen from Australia
The pelvic cavity is not an organ, but a tissue structure of the body, just like our chest cavity and abdominal cavity. Both men and women have this structure, but the urogenital system is different. This knowledge is an important part of the development and popularization of sex education.
