LooseLeaf for Human Anatomy
5th Edition
ISBN: 9781259285271
Author: Michael McKinley Dr., Valerie O'Loughlin, Elizabeth Pennefather-O'Brien
Publisher: McGraw-Hill Education
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Question
Chapter 25, Problem 6CR
Summary Introduction
To determine:
The significance of alveolar type II cells in the maintenance of inflation of lungs.
Introduction:
The respiratory bronchioles and alveolar ducts contain small saccular outpocketings called alveoli. It has a thin wall which is specialized to promote the diffusion of gases between the alveolus and the blood in the pulmonary capillaries. Each lung contains about 300 to 400 million alveoli. The two types of cells that form the alveolar wall are alveolar type I cell and alveolar type II cell.
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Why are alveolar type II cells important in maintaining theinflation of the lungs?
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Chapter 25 Solutions
LooseLeaf for Human Anatomy
Ch. 25 - Explain the functions carried out by the...Ch. 25 - Prob. 2WYLCh. 25 - What changes occur in inhaled gases as they travel...Ch. 25 - What is the function of the nasal conchae?Ch. 25 - How is swallowed food prevented from entering the...Ch. 25 - Prob. 6WYLCh. 25 - Prob. 7WYLCh. 25 - How do terminal and respiratory bronchioles differ...Ch. 25 - Prob. 9WYLCh. 25 - What is pulmonary ventilation?
Ch. 25 - Prob. 11WYLCh. 25 - Prob. 12WYLCh. 25 - Prob. 13WYLCh. 25 - Prob. 14WYLCh. 25 - Match each numbered item with the most closely...Ch. 25 - The visceral pleura covers the a. outer surface of...Ch. 25 - Prob. 2MCCh. 25 - Prob. 3MCCh. 25 - Which structure is the last, smallest portion of...Ch. 25 - Which is not a function of the paranasal sinuses?...Ch. 25 - Prob. 6MCCh. 25 - The C-shaped cartilages in the trachea a. serve as...Ch. 25 - Which of the following is not a muscle of...Ch. 25 - The epithelium lining the alveolus is composed of...Ch. 25 - The apneustic center is involved in a. inhibition...Ch. 25 - What is the function of the mucous lining of the...Ch. 25 - Prob. 2CRCh. 25 - Prob. 3CRCh. 25 - What are the components of the bronchial tree,...Ch. 25 - Prob. 5CRCh. 25 - Prob. 6CRCh. 25 - How do the left and right lungs differ...Ch. 25 - Prob. 8CRCh. 25 - Name the autonomic nervous system respiratory...Ch. 25 - Prob. 10CRCh. 25 - Prob. 1DCRCh. 25 - Your best friend George is an athletic 20-year-old...
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- How does the structure of alveoli maximize gas exchange?arrow_forward1) which lipoprotein prevents our alveoli from collapsing? 2) which alveolar cells produce it ? 3) which newborn babies might be at risk of alveolar collapse because they do not yet produce lipoprotein?arrow_forwardFibrosis is a restrictive disease characterised by abnormal formation of fibre-like scar tissue in the alveoli. How does this affect respiratory function? a) It causes a decrease in airway resistance O b) It causes a decrease in lung compliance O c) It causes an increase in airway resistance d) It causes an increase in lung compliancearrow_forward
- How does pulmonary ventilation get altered in infected lungs?arrow_forwardWhat is the function of the alveolar macrophages in the lung alveoli?arrow_forward5. In the illustration of the alveolar wall, which of the following labeled cells produces a substance that lowers alveolar surface tension? A) -B this E B) C) D) E)arrow_forward
- What consequences would result if inflammation caused a build up of fluid in the alveoli and interstitial spaces?arrow_forward1.) What are the forces that tend to make the lungs collapse? 2.) Enumerate the structures where gas exchange takes place. 3.) What is/are the significance of incomplete rings of tracheal cartilages?arrow_forwardThe alveolar walls are composed of two types of cells type I and type II pneumocytes. The function of type II cells is to O increase surface tension O secrete surfactant O decrease surface tension O trap dust and other debris O b) and c) O b) and d)arrow_forward
- What is the function of the abundant elastin fibers that occur in the stroma of the lung and around all respiratory tubes from the trachea through the respiratory tree?arrow_forwardAs mentioned in the chapter, sometimes it is necessary to install a permanent tracheostomy—for example, in smokers who develop laryngeal cancer. Besides interfering with the ability to speak, what sorts of health problems would you expect to see in an individual with a permanent tracheostomy, and why?arrow_forwardThe rate of diffusion would increase by? A) an increase in airway resistance B) a decrease in lung compliance C) a decrease in alveolar surface area D) a decrease in alveolar barrier thicknessarrow_forward
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