HUMAN ANATOMY
6th Edition
ISBN: 9781260210262
Author: SALADIN
Publisher: RENT MCG
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Chapter 3, Problem 4TYC
Summary Introduction
To explain:
The functional significance of the histological difference of the epithelium between the respiratory tract and the alveoli and the reason due to which the alveoli do not have epithelium similar to the epithelium of the rest of the respiratory tract.
Introduction:
The sheet of the tissue that is made up of one or more than one layers of cells is known as the epithelium. The function of epithelia includes protection, secretion of mucus and some digestive enzymes, and absorption of food.
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The epithelium of the respiratory tract is mostly of the pseudostratified columnar ciliated type, but in the alveoli, the tiny sacs where oxygen and carbon dioxide are exchanged between the blood and inhaled air, the epithelium is simple squamous. Explain the functional significance of this histological difference. That is, why do the alveoli not have the same kind of epithelium as the rest of the respiratory tract? Explain your answer in 4 to 5 sentences. Indicate the reference/s of your answer.
The structure in the lungs known as the respiratory membrane is where gases are exchanged -oxygen leaves the lungs and enters the blood, and carbon dioxide leaves the blood and enters the lungs. The respiratory membrane is composed of two extremly thin layers of simple squamous epithelium. Explain how the structure of the respiratory membrane follows its function.
What functions of a ciliated pseudostratified columnar What functions of a ciliated pseudostratified columnar pithelium could not be served by a stratified squamous epithelium? In light of this, what might be some consequences of bronchial metaplasia in heavy smokers?
Chapter 3 Solutions
HUMAN ANATOMY
Ch. 3.1 - Define tissue and distinguish a tissue from a cell...Ch. 3.1 - Prob. 2BYGOCh. 3.1 - Prob. 3BYGOCh. 3.1 - Prob. 4BYGOCh. 3.1 - Prob. 5BYGOCh. 3.2 - Distinguish between simple and stratified...Ch. 3.2 - Prob. 7BYGOCh. 3.2 - Prob. 8BYGOCh. 3.2 - Prob. 9BYGOCh. 3.2 - Prob. 10BYGO
Ch. 3.2 - Explain how urothelium is specifically adapted to...Ch. 3.3 - When the following tissues are injured, which do...Ch. 3.3 - Prob. 12BYGOCh. 3.3 - Prob. 13BYGOCh. 3.3 - Prob. 14BYGOCh. 3.3 - Prob. 15BYGOCh. 3.3 - Discuss the difference between dense regular and...Ch. 3.3 - Describe some similarities, differences, and...Ch. 3.3 - What are the three basic kinds of formed elements...Ch. 3.4 - Although the nuclei of a muscle fiber are pressed...Ch. 3.4 - What do nervous muscular tissue have in common?...Ch. 3.4 - What are the two basic types of cells in nervous...Ch. 3.4 - Name the three kinds of muscular tissue, describe...Ch. 3.5 - Distinguish between a simple gland and a compound...Ch. 3.5 - Prob. 23BYGOCh. 3.5 - Prob. 24BYGOCh. 3.5 - Prob. 25BYGOCh. 3.6 - What functions of a ciliated pseudostratified...Ch. 3.6 - Tissues can grow through an increase in cell size...Ch. 3.6 - Distinguish between differentiation and...Ch. 3.6 - Distinguish between regeneration and fibrosis....Ch. 3.6 - Prob. 29BYGOCh. 3 - Prob. 3.1.1AYLOCh. 3 - Prob. 3.1.2AYLOCh. 3 - Prob. 3.1.3AYLOCh. 3 - Prob. 3.1.4AYLOCh. 3 - Prob. 3.1.5AYLOCh. 3 - Prob. 3.1.6AYLOCh. 3 - Prob. 3.1.7AYLOCh. 3 - Prob. 3.2.1AYLOCh. 3 - The location, composition, and functions of a...Ch. 3 - Prob. 3.2.3AYLOCh. 3 - Prob. 3.2.4AYLOCh. 3 - The appearance, representative locations, and...Ch. 3 - Prob. 3.2.6AYLOCh. 3 - Differences in structure, location, and function...Ch. 3 - The process of exfoliation and a clinical...Ch. 3 - Prob. 3.3.1AYLOCh. 3 - Prob. 3.3.2AYLOCh. 3 - The types of connective tissue classified as...Ch. 3 - Prob. 3.3.4AYLOCh. 3 - The distinction between loose and dense fibrous...Ch. 3 - The appearance, representative locations, and...Ch. 3 - The appearance, representative locations, and...Ch. 3 - Prob. 3.3.8AYLOCh. 3 - Prob. 3.3.9AYLOCh. 3 - The relationship of the perichondrium to...Ch. 3 - Prob. 3.3.11AYLOCh. 3 - Prob. 3.3.12AYLOCh. 3 - Prob. 3.3.13AYLOCh. 3 - Prob. 3.3.14AYLOCh. 3 - Prob. 3.3.15AYLOCh. 3 - Why blood is considered a connective tissueCh. 3 - Prob. 3.3.17AYLOCh. 3 - Prob. 3.3.18AYLOCh. 3 - The meaning of cell excitability, and why nervous...Ch. 3 - Prob. 3.4.2AYLOCh. 3 - Prob. 3.4.3AYLOCh. 3 - Prob. 3.4.4AYLOCh. 3 - The defining characteristics of muscular tissue as...Ch. 3 - Prob. 3.4.6AYLOCh. 3 - Prob. 3.4.7AYLOCh. 3 - The microscopio representative locations, and...Ch. 3 - Prob. 3.5.1AYLOCh. 3 - The distinction between exocrine and eadocrine...Ch. 3 - Prob. 3.5.3AYLOCh. 3 - Prob. 3.5.4AYLOCh. 3 - Prob. 3.5.5AYLOCh. 3 - Prob. 3.5.6AYLOCh. 3 - The distinctions between eccrine, apocrine, and...Ch. 3 - Prob. 3.5.8AYLOCh. 3 - The tissue layers of a mucous membrane and of a...Ch. 3 - The nature and locations of endothelium,...Ch. 3 - Prob. 3.6.1AYLOCh. 3 - The difference between differentiation and...Ch. 3 - Two ways in which the body repairs damaged...Ch. 3 - The meaning of tissue atrophy, its causes, and...Ch. 3 - Prob. 3.6.5AYLOCh. 3 - Prob. 3.6.6AYLOCh. 3 - Prob. 1TYRCh. 3 - Prob. 2TYRCh. 3 - Prob. 3TYRCh. 3 - A seminiferous tubule of the testis is lined with...Ch. 3 - Prob. 5TYRCh. 3 - Prob. 6TYRCh. 3 - Prob. 7TYRCh. 3 - Tendons are composed of _________ connective...Ch. 3 - The shape of the external ear is due to skeletan...Ch. 3 - The most abundant formed elements(s) of blood...Ch. 3 - Prob. 11TYRCh. 3 - Prob. 12TYRCh. 3 - Prob. 13TYRCh. 3 - Prob. 14TYRCh. 3 - Tendons and ligaments are made mainly of the...Ch. 3 - Prob. 16TYRCh. 3 - Prob. 17TYRCh. 3 - Prob. 18TYRCh. 3 - Prob. 19TYRCh. 3 - Prob. 20TYRCh. 3 - Prob. 1BYMVCh. 3 - Prob. 2BYMVCh. 3 - Prob. 3BYMVCh. 3 - Prob. 4BYMVCh. 3 - Prob. 5BYMVCh. 3 - State a meaning of each word element and give a...Ch. 3 - State a meaning of each word element and give a...Ch. 3 - State a meaning of each word element and give a...Ch. 3 - Prob. 9BYMVCh. 3 - Prob. 10BYMVCh. 3 - Prob. 1WWWTSCh. 3 - Prob. 2WWWTSCh. 3 - Prob. 3WWWTSCh. 3 - Prob. 4WWWTSCh. 3 - Prob. 5WWWTSCh. 3 - Prob. 6WWWTSCh. 3 - Prob. 7WWWTSCh. 3 - Prob. 8WWWTSCh. 3 - Prob. 9WWWTSCh. 3 - Prob. 10WWWTSCh. 3 - Prob. 1TYCCh. 3 - Prob. 2TYCCh. 3 - Prob. 3TYCCh. 3 - Prob. 4TYCCh. 3 - Some human cells are incapable of mitosis...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- The structure in the lungs known as the respiratory meme Dane is where the gases are exchanged - oxygen leaves the lungs and enters the blood, and carbon dioxide leaves the blood and enters the lungs. The respiratory membrane is composed of two extremely thin layers of simple squamous epithelium. Explain how the structure of the respiratory meme range follows its function.arrow_forwardIdentify the epithelium lining a (any) component of the respiratory zone of the respiratory tract 1. simple squamous epithelium 2. simple cuboidal (ciliated) epithelium 3. simple columnar (ciliated) epithelium 4. pseudostratified columnar (ciliated) epithelium 5. stratified squamous epithelium Choose the following: (A) 1, 2, and 3 (B) 1 and 2 (C) 4 and 5 (D) 2, 3, and 4 (E) 3, 4, and 5arrow_forwardMucous membranes (pseudostratified ciliated columnar epithelia) line most upper respiratory tract structures. Although these membranes filter the air by trapping pathogens in mucus, they are very delicate. Pieces of food passing through the oropharynx and laryngopharynx could damage this type of epithelium. Predict which type of epithelium protects the lining of the oropharynx and laryngopharynx.arrow_forward
- In the lungs of smokers, a process called metaplasia occurs in which the normal lining cells of the lung are replaced by squamous metaplastic cells (many layers of squamous epithelial cells). Functionally, why is this an undesirable body reaction to tobacco smoke? HINT Your answer should mention the structure and function of the normal lining cells of the lung.arrow_forwardRespiratory Histology: For each of the following parts of the respiratory tract, indicate the type of epithelium found there (simple squamous, stratified squamous, pseudostratified ciliated columnar), and why that location requires the type of epithelium that it has. Part of the Respiratory Tract Type of Epithelium Vestibule of the nostril Laryngopharynx Nasal cavity Nasopharynx Oropharynx Alveoliarrow_forwardWhy is the pseudostratified epithelium of the respiratory tract ciliated while the same type of tissue in the digestive tract is not ciliated?arrow_forward
- After prolonged inflammation of the mucous membrane of the nasal cavity in the patient, changes in the epithelium are observed. What epithelium has changed? Stratified columnar Stratified cuboidal Stratified squamous O Pseudostratified O Simple squamousarrow_forwardWhy are there cartilages lining parts of the respiratory tract? If support is needed, why aren’t thesecartilages complete encircling the segments in which they are found?arrow_forwardIn chronic smokers, the lining of the trachea and bronchichanges from a pseudostratified ciliated columnarepithelium to a stratified squamous epithelium. Why do youthink this change occurs? What are some consequences ofthis epithelium in the trachea?arrow_forward
- Certain medical conditions cause the simple squamous epithelium in the lung to thicken. Predict the consequences of this thickening?arrow_forwardMost organs of the human body contain all four (4) tissue types working together to allow the organ to perform its specific function. From the image of the respiratory tract below: (1) indicate with arrows where those four tissue types may be found and name them next to the arrows in that section of the tract. (2) Briefly describe the functions of the four tissue types. In your answer you must include a unique structural feature of each tissue type that allows it to perform this function. (e.g., in the stomach, specialised epithelial cells secrete HCl acid for digestion).arrow_forwardHumphrey 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.arrow_forward
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