The journey of sperm through the female reproductive tract is orchestrated by a finely tuned interplay between spermatozoa and the mucus lining of the cervix, uterus and fallopian tubes. Cervical ...

Mucus is a thin, slippery fluid that lines the nose, throat, and other passages to trap dust and germs. Phlegm is a thicker type of mucus produced in the lungs to catch and remove harmful particles ...