pectinate muscle


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Related to pectinate muscle: papillary muscle, Right auricle

pectinate muscle

A ridge of myocardium on the inner wall of either atrium of the heart.
See also: muscle
References in periodicals archive ?
10) determined pectinate muscle size bigger than 1 mm in 97% of their normal autopsy hearts.
The rim of the LAA orifice was smooth and pectinate muscles were clear in the LAA.