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 In Women Causes. Chlamydia (Chlamydia trachomatis) is a bacterium that causes an infection that is very similar to gonorrhea in the way that it is spread and the symptoms it produces. Like gonorrhea, the chlamydia bacterium is found in the cervix and urethra and can live in the throat or rectum.