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 caused by a bacterial infection of the genital tract by the bacterium Chlamydia trachomatis. Chlamydia is passed from one person to another during sexual contact that involves vaginal, oral, or anal sex.Chlamydia infection can also be passed from an infected mother to her baby during vaginal delivery.hlamydia is caused by a bacterial infection of the genital tract by the bacterium Chlamydia trachomatis. Chlamydia is passed from one person to another during sexual contact that involves vaginal, oral, or anal sex.