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.

Thoracic anatomy
Share article

Article information

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

Support Radiopaedia and see fewer ads

Updating… Please wait.
Loadinganimation

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.