Flatulence pathophysiology: Difference between revisions
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==Pathphysiology==Flatus is expelled under pressure through the [[anus]], whereby, as a result of the voluntary or involuntary tensing of the [[anal sphincter]], the rapid evacuation of[[gases]] from the lower [[intestine]] occurs. Depending upon the relative state of the [[sphincter]] (relaxed/tense) and the positions of the [[buttock]]s, this often results in an audible crackling or trumpeting [[sound]], but gas can also be passed quietly. The olfactory components of flatulence include [[skatole]], [[indole]], and [[sulfur]]ous compounds.<ref>{{cite web | ==Pathphysiology== | ||
Flatus is expelled under pressure through the [[anus]], whereby, as a result of the voluntary or involuntary tensing of the [[anal sphincter]], the rapid evacuation of[[gases]] from the lower [[intestine]] occurs. Depending upon the relative state of the [[sphincter]] (relaxed/tense) and the positions of the [[buttock]]s, this often results in an audible crackling or trumpeting [[sound]], but gas can also be passed quietly. The olfactory components of flatulence include [[skatole]], [[indole]], and [[sulfur]]ous compounds.<ref>{{cite web | |||
|url=http://www.patient.co.uk/showdoc/40000086/ | |url=http://www.patient.co.uk/showdoc/40000086/ | ||
Revision as of 18:37, 3 April 2013
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]
Pathphysiology
Flatus is expelled under pressure through the anus, whereby, as a result of the voluntary or involuntary tensing of the anal sphincter, the rapid evacuation ofgases from the lower intestine occurs. Depending upon the relative state of the sphincter (relaxed/tense) and the positions of the buttocks, this often results in an audible crackling or trumpeting sound, but gas can also be passed quietly. The olfactory components of flatulence include skatole, indole, and sulfurous compounds.[1] The non-odorous gases are mainly nitrogen (ingested), carbon dioxide (produced by aerobic microbes or ingested), and hydrogen(produced by some microbes and consumed by others), as well as lesser amounts of oxygen (ingested) and methane (produced by anaerobic microbes).[2] Odors result from trace amounts of other components (often containing sulfurcompounds, see below).
Flatus is expelled under pressure through the anus, whereby, as a result of the voluntary or involuntary tensing of the anal sphincter, the rapid evacuation ofgases from the lower intestine occurs. Depending upon the relative state of the sphincter (relaxed/tense) and the positions of the buttocks, this often results in an audible crackling or trumpeting sound, but gas can also be passed quietly. The olfactory components of flatulence include skatole, indole, and sulfurous compounds.[3] The non-odorous gases are mainly nitrogen (ingested), carbon dioxide (produced by aerobic microbes or ingested), and hydrogen(produced by some microbes and consumed by others), as well as lesser amounts of oxygen (ingested) and methane (produced by anaerobic microbes).[4] Odors result from trace amounts of other components (often containing sulfurcompounds, see below).
References
- ↑ "Flatulence, wind and bloating". Patient UK. Retrieved 2006-12-11.
- ↑ Suarez F (1997). "Insights into human colonic physiology obtained from the study of flatus composition". Am J Physiol. 272 (5 Pt 1): G1028–33. Unknown parameter
|coauthors=ignored (help) - ↑ "Flatulence, wind and bloating". Patient UK. Retrieved 2006-12-11.
- ↑ Suarez F (1997). "Insights into human colonic physiology obtained from the study of flatus composition". Am J Physiol. 272 (5 Pt 1): G1028–33. Unknown parameter
|coauthors=ignored (help)