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Author Question: Which of the following can impair or inhibit ciliary activity? 1. Drying of the respiratory tract ... (Read 85 times)

maegan_martin

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on: Jul 16, 2018
Which of the following can impair or inhibit ciliary activity? 1. Drying of the respiratory tract mucosa 2. Exposure to smoke 3. Parasympatholytic drugs
 
  a. 1 and 2 only
  b. 1 only
  c. 1, 2, and 3
  d. 2 and 3 only

Question 2

What is the name given to the action produced by the forward stroking of millions of cilia?
 
  a. Coughing
  b. Mucociliary escalator
  c. Mucus stroking
  d. The wave


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al

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

ANS: C
Ciliary beating can be effectively slowed or even stopped if the viscosity of the sol layer is in-creased by exposure to dry gas. Ciliary motion is also stopped following exposure to smoke, high concentrations of inhaled O2, and drugs like atropine.

Answer to Question 2

ANS: B
The stroking action of millions of cilia propels the surrounding mucus at a speed approximately 2 cm/min. This action is commonly referred to as the mucociliary escalator.


maegan_martin

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Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

xiaomengxian

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Reply 3 on: Yesterday
Wow, this really help

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