What type of movement occurs in most of the internal tubular organs...

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. Amoeboid movement in cells is caused by pseudopodia formed by the streaming of protoplasm and the involvement of cytoskeletal elements like microfilaments. Cytoskeletal elements like microfilaments are involved in amoeboid movement in cells. Ciliary movement occurs in most of our internal tubular organs which are lined by ciliated epithelium.