What is facilitated by the ciliary movement in the human body?

Movement is one of the significant features of living beings. Streaming of protoplasm in the unicellular organisms like Amoeba is a simple form of movement.Movement of cilia, flagella and tentacles are shown by many organisms. Animals perform locomotion for the search of food, shelter, mate, suitable breeding grounds, favourable climatic conditions or to escape from enemies/predators. Some specialised cells in our body like macrophages and leucocytes in blood exhibit amoeboid movement. The coordinated movements of cilia in the trachea help in removing dust particles and some of the foreign substances inhaled along with the atmospheric air, and the passage of ova through the female reproductive tract is also facilitated by the ciliary movement.Locomotion requires a perfect coordinated activity of muscular, skeletal and neural systems.