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Prolonged exposure to cigarette smoke causes damage to ciliated epithelium that lines portions of the respiratory tract. Discuss the implications of this damage.

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Understanding the implications of this damage depends upon understanding the nature of the damage itself.

"Ciliated" refers to cells that have hair-like structures on them, which can move and thereby transport either themselves or extracellular particles, depending on the cell and its function. "Epithelial" refers to cells that are part of the epithelium, essentially the outer layer of the body and the primary protective barrier between the body and the environment.

The respiratory tract is one of the most vulnerable portions of the body because the barrier between the interior of the body and the...

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