flagellated sperm motility sperm flagellum movement involved in flagellated sperm motility sperm flagellum movement sperm movement The directed, self-propelled movement of a cilium (aka flagellum) that contributes to the movement of a flagellated sperm. sperm flagellum movement involved in flagellated sperm movement flagellated sperm movement sperm motility cilium-dependent cell motility cilium movement involved in cell motility sperm motility