Menstruation, periodic discharge from the vagina of blood, secretions, and disintegrating mucous membrane that had lined the uterus. 1  The biological significance of the process in humans can best be explained by reference to the reproductive function in other mammals.
Chlamydia is a common sexually transmitted disease (STD) caused by infection with Chlamydia trachomatis. It can cause cervicitis in women and urethritis and proctitis in both men and women.
Chlamydia is a very common and curable sexually transmitted disease (STD).It's caused by a kind of bacteria called the chlamydia trachomatis bacteria and can be passed from person to person during vaginal, oral and anal sex.There are an estimated 2.8 million new cases of chlamydia in the United States each year, with most going undiagnosed.t's caused by a kind of bacteria called the chlamydia trachomatis bacteria and can be passed from person to person during vaginal, oral and anal sex. There are an estimated 2.8 million new cases of chlamydia in the United States each year, with most going undiagnosed.