Pectinate muscles

The pectinate muscles are "teeth of a comb" shaped parallel muscular columns that are present on the inner wall of the right and left atria.

The right atrium has thick and coarse pectinate muscles while these are few smooth and thinner in the left atrium.

History and etymology

The term is derived from Latin word "pecten" which means comb.

Anatomy: Thoracic


Article information

rID: 31464
System: Cardiac
Section: Anatomy
Tag: pm
Synonyms or Alternate Spellings:

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