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 ?
multi-lobed structure of LAA, pectinate muscles within the LAA wall and a reverberation artifact originating from the ridge at the mouth of the left upper pulmonary vein (Coumadin ridge).7 Sometimes, it becomes impossible to differentiate dense SEC from underlying thrombus and in the present case, profuse, dense SEC with its whirling motion created difficulties in diagnosing the thrombus in the LA cavity, presumably due to near identical radio-density.
In conclusion, the femoral nerve issued in all animals, with varying branches to the major psoas, minor psoas, femoral quadriceps, sartorius and pectinate muscles. No significant differences between the frequencies of the source and muscular branches of the femoral nerve in relation to sex and antimeres were observed.