Internal anal sphincter

Known as: M. sphincter ani internus, Musculus sphincter ani internus, Circular muscle layer of anal canal 
A ring of smooth muscle surrounding the anus on the inside of the external anal sphincter.

Topic mentions per year

Topic mentions per year

1953-2018
0204019532017

Papers overview

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2011
2011
BACKGROUND & AIMS To restore fecal continence, the weakened pressure of the internal anal sphincter (IAS) must be increased. We… (More)
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2009
2009
BACKGROUND & AIMS The internal anal sphincter (IAS) is a specialized circular smooth muscle that maintains rectoanal continence… (More)
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Highly Cited
2006
Highly Cited
2006
OBJECTIVES To establish the true prevalence of clinically recognisable and occult obstetric anal sphincter injuries (OASIS… (More)
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Highly Cited
1999
Highly Cited
1999
PURPOSE Standard surgical treatment for low rectal cancer situated below 5 cm from the anal verge or at less than 1 cm from the… (More)
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1997
1997
The results of repair to the internal and sphincter alone has been evaluated in five patients with persistent anal incontinence… (More)
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1995
1995
PURPOSE We aimed to investigate the changes in the proportion of collagen and in the elasticity of the internal anal sphincter in… (More)
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Highly Cited
1992
Highly Cited
1992
The studies were performed in in vitro to examine the role of nitric oxide (NO) in nonadrenergic noncholinergic (NANC) nerve… (More)
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1991
1991
Anal endosonography provides clear images of the internal anal sphincter. Forty-two controls have been studied to establish a… (More)
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1990
1990
The purpose of the present investigation was to examine the role of alpha adrenoceptors in the internal anal sphincter (IAS… (More)
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1987
1987
The effect on anal tone of electrical stimulation of the presacral (hypogastric) sympathetic nerves has been studied in eight… (More)
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