A EN MISC Module 4 Discussion Responses

Response to Gifty Your discussion begins with a splendid introduction, where you observe the importance of the respiratory system. The other major point that I found interesting is the cigarette smoke causing metaplasia of the lung cells. I had not captured this in my discussion, and it is true on the point of changed size and shape of the vascular matter. What I wish to add is that Squamous metaplasia is mainly is a response to the toxic injury from smoking habits, which could lead to full neoplastic transformation[ CITATION Rig16 l 1033 ]. The other point worth noting is the lung passages' blockage due to the excess mucus as identified by[ CITATION LuQ18 l 1033 ]. Blocked lung passages lead to reduced lung function and breathlessness. Towards the end of your discussion, you identified that alveoli, once damaged, cannot regenerate. I also found the above point interesting, especially with the consideration that in most cases, lungs are known to grow. To add to that, cigarette smoke is known to slow the movement of cilia, which is responsible for cleaning t