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.
C. trachomatis also causes a form of blindness known as trachoma, but the sexually transmitted disease causes Chlamydia urethritis in men and cervicitis in women. It is transmitted through infected secretions, and mainly infects mucosal membranes, particularly the cervix, rectum and urethra.. trachomatis also causes a form of blindness known as trachoma, but the sexually transmitted disease causes Chlamydia urethritis in men and cervicitis in women. It is transmitted through infected secretions, and mainly infects mucosal membranes, particularly the cervix, rectum and urethra.