The fallopian tubes are lined with a tiny cilia. What function do the cilia have? Why is it nessacary for the fallopian tubes to be lined up with the cilia?

The Fallopian tubes have small hair-like projections called cilia on the cells of the lining. These tubal cilia are essential to the movement of the egg through the tube into the uterus. If the tubal cilia are damaged by infection, the egg may not get 'pushed along' normally but may stay in the tube.