One of the things that happens when people smoke habitually is they develop \'sm

Question

One of the things that happens when people smoke habitually is they develop 'smokers cough'. This behavior helps smokers to cough up mocus from the lungs. The cough becomes more frequent over time because the typical epithelial lining of the airways (pseudostratified ciliated columnar epithelium) changes into stratified columnar epithelium

1) What function of the pseudostratified ciliated columnar cells would be lost by transforming them to this other type of tissue?

2) Besides smoking, What do you think caused these cells to make this transition from one type to another?

Explanation / Answer

1. Pseudostratified ciliated columnar cells are found in respiratory tract and trachea where their mucus secretions helps to collect foregin material and throw them out through sneezing and coughing, so these functions are lost when pseudostratified ciliated columnar epithelium changed into stratified columnar epithelium.

2. Beside smoking some other factors may also change these tissue from one type to another like pollution, asbestos, radon gas which produces uranium all affect the tissue.

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