Question

What are cilia and flagella? How do these structures acquire movement? What are some examples of ciliated and flagellated cells in humans?

Answer 1

Both cilia and flagella are flexible, whiplike extension of the membrane present in eukaryotic cell. ​Cilia are short, hair like appendages and flagella are long threadlike appendages found on cell. If these extensions are more in number they are called as cilia and if only one or few called as flagella. These enable the cell to move by exhibiting rotational or wave like movements. In humans, the same function is performed by the epithelial cell lining of air passage and the movement exhibited by the sperm (in human males).