What is Cervical Mucus Good For

CM or cervical mucus regulates fertility and its physical properties change during the
menstrual cycle.

• Cervical mucus (CM) is produced by glands in the cervix, the entrance to the uterus.
• CM accepts, filters, prepares, and releases sperm (capacitation) for successful transport to the inside of the uterus, then, on to the fallopian tubes and the egg and fertilization.
• The best time for sperm transport through the cervical mucus is during the period shortly before, during, and after ovulation, when mucus is thin and stretchy (less viscoelastic).
• Sperm also can, however, penetrate the thicker mucus that occurs before ovulation.