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Author Question: What is the most common cell type found in the mucosa of the larger airways? a. Pseudostratified ... (Read 50 times)

hbsimmons88

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on: Jul 16, 2018
What is the most common cell type found in the mucosa of the larger airways?
 
  a. Pseudostratified ciliated columnar epithe-lium
  b. Pseudostratified ciliated cuboidal epithe-lium
  c. Stratified ciliated squamous epithelium
  d. Stratified unciliated serous endothelium

Question 2

What type of flow is seen in and beyond the terminal bronchioles?
 
  a. Laminar
  b. Transitional
  c. Turbulent
  d. Varies among individuals


smrtceo

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: A
The most common type of epithelia is the numerous pseudostratified, ciliated, columnar epithelia.

Answer to Question 2

ANS: A
Low-velocity gas movement at the level of the terminal bronchiole and beyond is physiologically important for two reasons. First, laminar flow develops, which minimizes resistance in the small airways and decreases the work associated with inspiration. Second, low gas velocity facilitates rapid mixing of gases.


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