Anatomy and Physiology
9th Edition
ISBN: 9781260256000
Author: SALADIN
Publisher: MCG
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Chapter 5, Problem 4TYC
The epithelium of the respiratory tract is mostly of the pseudostratified columnar ciliated type, but in the alveoli–the tiny air 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 don’t the alveoli have the same kind of epithelium as the rest of the respiratory tract?
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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.
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?
The respiratory membrane is composed of two extremely thin layers of simple squamous epithelium. Explain how this structure supports or helps the function of the respiratory membrane.
Chapter 5 Solutions
Anatomy and Physiology
Ch. 5.1 - Classify each of the following into one of the...Ch. 5.1 - What are tissues composed of in addition to cells?Ch. 5.1 - Prob. 3BYGOCh. 5.1 - Prob. 4BYGOCh. 5.1 - Two names for the branch of biology concerned with...Ch. 5.1 - Prob. 2AYLOCh. 5.1 - The roles of cells, matrix, fibers, and ground...Ch. 5.1 - Primary germ layers of the embryo and their...Ch. 5.1 - Prob. 5AYLOCh. 5.2 - Distinguish between simple and stratified...
Ch. 5.2 - Prob. 6BYGOCh. 5.2 - Prob. 7BYGOCh. 5.2 - Prob. 8BYGOCh. 5.2 - Prob. 1AYLOCh. 5.2 - Prob. 2AYLOCh. 5.2 - 5.2 Epithelial Tissue 3. Defining characteristics...Ch. 5.2 - Prob. 4AYLOCh. 5.2 - Prob. 5AYLOCh. 5.2 - Prob. 6AYLOCh. 5.2 - Prob. 7AYLOCh. 5.2 - Prob. 8AYLOCh. 5.2 - Prob. 9AYLOCh. 5.3 - What features do most or all connective tissues...Ch. 5.3 - Prob. 10BYGOCh. 5.3 - Prob. 11BYGOCh. 5.3 - Prob. 12BYGOCh. 5.3 - Discuss the difference between dense regular and...Ch. 5.3 - Prob. 14BYGOCh. 5.3 - Prob. 15BYGOCh. 5.3 - Prob. 1AYLOCh. 5.3 - Prob. 2AYLOCh. 5.3 - Prob. 3AYLOCh. 5.3 - Prob. 4AYLOCh. 5.3 - Prob. 5AYLOCh. 5.3 - 5.3 Connective Tissue 6. The appearance,...Ch. 5.3 - Prob. 7AYLOCh. 5.3 - Prob. 8AYLOCh. 5.3 - Prob. 9AYLOCh. 5.3 - Prob. 10AYLOCh. 5.3 - 5.3 Connective Tissue 11. Why blood is classified...Ch. 5.4 - Prob. 16BYGOCh. 5.4 - Prob. 17BYGOCh. 5.4 - Prob. 18BYGOCh. 5.4 - Prob. 1AYLOCh. 5.4 - Prob. 2AYLOCh. 5.4 - Prob. 3AYLOCh. 5.4 - 5.4 Nervous and Muscular TissuesExcitable Tissues...Ch. 5.4 - Prob. 5AYLOCh. 5.5 - Prob. 19BYGOCh. 5.5 - Prob. 20BYGOCh. 5.5 - Prob. 21BYGOCh. 5.5 - Prob. 22BYGOCh. 5.5 - Prob. 23BYGOCh. 5.5 - Prob. 1AYLOCh. 5.5 - Prob. 2AYLOCh. 5.5 - Prob. 3AYLOCh. 5.5 - Prob. 4AYLOCh. 5.5 - Prob. 5AYLOCh. 5.5 - Prob. 6AYLOCh. 5.5 - Prob. 7AYLOCh. 5.5 - 5.5 Cell Junctions, Glands, and Membranes 8....Ch. 5.5 - 5.5 Cell Junctions, Glands, and Membranes 9....Ch. 5.5 - Prob. 10AYLOCh. 5.6 - Distinguish between differentiation and...Ch. 5.6 - Prob. 25BYGOCh. 5.6 - Prob. 26BYGOCh. 5.6 - Distinguish between regeneration and fibrosis....Ch. 5.6 - Prob. 1AYLOCh. 5.6 - Prob. 2AYLOCh. 5.6 - 5.6 Tissue Growth, Development, Repair, and...Ch. 5.6 - Prob. 4AYLOCh. 5.6 - Prob. 5AYLOCh. 5.6 - Prob. 6AYLOCh. 5.6 - Prob. 7AYLOCh. 5.6 - 5.6 Tissue Growth, Development, Repair, and...Ch. 5 - Transitional epithelium is found is a. the urinary...Ch. 5 - Prob. 2TYRCh. 5 - Which of these is a primary germ layer? a....Ch. 5 - A seminiferous tubule of the testis is lined with...Ch. 5 - Prob. 5TYRCh. 5 - A fixative serves to a. stop tissue decay. b....Ch. 5 - Prob. 7TYRCh. 5 - Prob. 8TYRCh. 5 - Prob. 9TYRCh. 5 - Prob. 10TYRCh. 5 - Prob. 11TYRCh. 5 - Prob. 12TYRCh. 5 - Prob. 13TYRCh. 5 - Prob. 14TYRCh. 5 - Tendons and ligaments are made mainly of the...Ch. 5 - Prob. 16TYRCh. 5 - Prob. 17TYRCh. 5 - Fibers and ground substance make up the ______ of...Ch. 5 - A/An _______ adult stem cell can differentiate...Ch. 5 - Prob. 20TYRCh. 5 - Prob. 1BYMVCh. 5 - Prob. 2BYMVCh. 5 - State a meaning of each word element, and give a...Ch. 5 - Prob. 4BYMVCh. 5 - Prob. 5BYMVCh. 5 - State a meaning of each word element, and give a...Ch. 5 - Prob. 7BYMVCh. 5 - Prob. 8BYMVCh. 5 - Prob. 9BYMVCh. 5 - Prob. 10BYMVCh. 5 - The esophagus is protected from abrasion by a...Ch. 5 - Prob. 2WWTSCh. 5 - Prob. 3WWTSCh. 5 - Prob. 4WWTSCh. 5 - Prob. 5WWTSCh. 5 - Prob. 6WWTSCh. 5 - Prob. 7WWTSCh. 5 - Prob. 8WWTSCh. 5 - Prob. 9WWTSCh. 5 - Prob. 10WWTSCh. 5 - A woman in labor is often told to push. In doing...Ch. 5 - A major tenet of the cell theory is that all...Ch. 5 - Prob. 3TYCCh. 5 - The epithelium of the respiratory tract is mostly...Ch. 5 - Which do you think would heal faster, cartilage or...
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- The Respiratory System Examine an H&E slide of a transverse section of the trachea or main bronchus, and respond to the following. 1. Give the three major layers in its wall from within outwards.i.ii.ii. 2. At high power fucus on the the apical surface of the epithelium,what structures are there? 3. What is function of the apical cell surface structures? 4. Still at a high power, how many nuclear (cell) layers can you observe? 5. Why is the epithelium called pseudostratified? 6. Look for goblet cells; what three functions do mucus produced by these cells serve?i.ii.iii. 7. Besides globlet cells, what other four types of cells are present in the epithelium?I.ii.iii.iv. 8. The epithelium is supported by a lamina priopria of loose connective tissue. Which two connective tissue fibres occur in this sub-layer?i.ii. 9. The presence of seromucous glands indicates the submucosal layer. What function is served by secretions of these glands? 10. The presence of the cartilage indicates the…arrow_forwardFor gas exchange to occur quickly and efficiently, which type of epithelium must be present on all respiratory surfaces? Group of answer choices Pseudostratified columnar epithelium Ciliated columnar epithelium Simple squamous epithelium Stratified squamous epithelium Ciliated squamous epitheliumarrow_forwardWhat type of epithelium lines the gas exchange surfaces of the alveoli? a. pseudostratified columnar epithelium b. ciliated columnar epithelium c. simple squamous epithelium d. simple cuboidal epithelium I believe that it is pseudostratified ciliated columnar epithelium but that is not an option so I don't know what one to choose.arrow_forward
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