musculi pectinati
noun plural
mus·cu·li pec·ti·na·ti
| \ ˈməs-kyə-ˌlī-ˌpek-ti-ˈnā-ˌtī
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Medical Definition of musculi pectinati
: small muscular ridges on the inner wall of the auricular appendage of the left and the right atria of the heart