Humphrey has smoked for years. In the past few months, mucushas accumulated in his lungs and he coughs often. A tissue sample(biopsy) taken from the lower portion of his trachea indicated thatstratified squamous epithelium has replaced the normal pseudostratified columnar epithelium lining the trachea. Humphrey’s physicianexplained that he has bronchitis, inflammation of the respiratoryairways, caused by smoking. As a result, some of the normal epithelium of the large respiratory passageways has been converted tostratified squamous epithelium. Explain why mucus has accumulated in Humphrey’s lungs to a greater degree than normal.
Humphrey has smoked for years. In the past few months, mucushas accumulated in his lungs and he coughs often. A tissue sample(biopsy) taken from the lower portion of his trachea indicated thatstratified squamous epithelium has replaced the normal pseudostratified columnar epithelium lining the trachea. Humphrey’s physicianexplained that he has bronchitis, inflammation of the respiratoryairways, caused by smoking. As a result, some of the normal epithelium of the large respiratory passageways has been converted tostratified squamous epithelium. Explain why mucus has accumulated in Humphrey’s lungs to a greater degree than normal.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Humphrey has smoked for years. In the past few months, mucus
has accumulated in his lungs and he coughs often. A tissue sample
(biopsy) taken from the lower portion of his trachea indicated that
stratified squamous epithelium has replaced the normal pseudostratified columnar epithelium lining the trachea. Humphrey’s physician
explained that he has bronchitis, inflammation of the respiratory
airways, caused by smoking. As a result, some of the normal epithelium of the large respiratory passageways has been converted to
stratified squamous epithelium. Explain why mucus has accumulated in Humphrey’s lungs to a greater degree than normal.
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