What is the flagella and cilia?

Cilia and flagella are both hair-like structures that extend from the surface of the cell, where they assist in movement.Cilia are short and more numerous than the longer flagella. They both have a membrane on their outer surface and have an internal structure of nine pairs of microtubules around two central tubules.

Sources:

Postlethwait, John H., and Janet L. Hopson. Modern Biology. Orlando, FL: Holt, Rinehart and Winston, 2009. Print.