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Unformatted text preview: longer. Cilia and Flagella * Axoneme- structural basis for ciliary movement * Consist of an array of thin protien cylinders called microtubles * There are two centrally microtubules surrounded by a ring of nine microtubule pairs (9+2 structure) * Dynein arms-a motor protein whos movement causes cilia to bend Cilia In The Lungs * Sweeps dust and germ laden mucous from the lung passageways to the throat to be swallowed. * Cigarette smoke slows down and then stops the action of cilia . Centrosome and Centrioles * Centrosome- a dense area of cytoplasm near the nucleus that is involved in mitosis * Centrioles- a pair of structures composed of microtubules arranged in right angles that are located in the centrosomes. * Has an unknown function in mitosis * involved in the formation of flagella and cilia...
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- Fall '10