Cough reflex

Revision as of 00:17, 9 August 2012 by WikiBot (talk | contribs) (Bot: Automated text replacement (-{{SIB}} + & -{{EH}} + & -{{EJ}} + & -{{Editor Help}} + & -{{Editor Join}} +))
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

WikiDoc Resources for Cough reflex


Most recent articles on Cough reflex

Most cited articles on Cough reflex

Review articles on Cough reflex

Articles on Cough reflex in N Eng J Med, Lancet, BMJ


Powerpoint slides on Cough reflex

Images of Cough reflex

Photos of Cough reflex

Podcasts & MP3s on Cough reflex

Videos on Cough reflex

Evidence Based Medicine

Cochrane Collaboration on Cough reflex

Bandolier on Cough reflex

TRIP on Cough reflex

Clinical Trials

Ongoing Trials on Cough reflex at Clinical

Trial results on Cough reflex

Clinical Trials on Cough reflex at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Cough reflex

NICE Guidance on Cough reflex


FDA on Cough reflex

CDC on Cough reflex


Books on Cough reflex


Cough reflex in the news

Be alerted to news on Cough reflex

News trends on Cough reflex


Blogs on Cough reflex


Definitions of Cough reflex

Patient Resources / Community

Patient resources on Cough reflex

Discussion groups on Cough reflex

Patient Handouts on Cough reflex

Directions to Hospitals Treating Cough reflex

Risk calculators and risk factors for Cough reflex

Healthcare Provider Resources

Symptoms of Cough reflex

Causes & Risk Factors for Cough reflex

Diagnostic studies for Cough reflex

Treatment of Cough reflex

Continuing Medical Education (CME)

CME Programs on Cough reflex


Cough reflex en Espanol

Cough reflex en Francais


Cough reflex in the Marketplace

Patents on Cough reflex

Experimental / Informatics

List of terms related to Cough reflex

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]


The cough reflex has both sensory (afferent) and motor (efferent) pathways. The internal laryngeal nerve carries the sensory information away from the area above the glottis in the trachea to the CNS via cranial nerve X (vagus). Stimulation of this area by dust or other foreign particles produces a cough, which is necessary to remove the foreign material from the respiratory tract before it reaches the lungs. [2] The mechanism of a cough is as follows:

  • Diaphragm and external intercostal muscles contract, increasing the volume fo the lungs and making the pressure of air within the lungs lower than atmospheric pressure.
  • Air rushes into the lungs in order to equalise the pressure.
  • The glottis closes to prevent air escaping whilst the diaphragm relaxes and expiratory muscles contract.
  • This reduces the volume of the lungs, therefore increasing pressure.
  • The pressure of air within the lungs is now greater than atmospheric pressure and so air is trying to escape.
  • Glottis opens, releasing air at over 100 mph.

Therefore, respiratory muscle weakness, tracheostomy and vocal cord pathology may all prevent effective clearing of the airways.