Q:

Coughing

safaTerkawi
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2022-08-08
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Coughing.

  1. Is reflexly initiated by irritation of the alveoli.
  2. Is associated with relaxation of airways smooth muscle.
  3. Depends on contraction of the diaphragm for expulsion of air.
  4. Differs from sneezing in that the glottis is initially closed.
  5. Is depressed during anaesthesia.
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All Answers

safaTerkawi
2022-08-08
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A. False It is initiated by irritation of the trachea and bronchi.

B. False Contraction narrows airways and increases velocity of flow.

C. False It depends on expiratory muscles, particularly abdominal muscles.

D. True Thus it is more explosive than sneezing.

E. True This may lead to retention of mucous secretions.

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