Pectinate

UPDATED: The word [pecten] originates from the Latin [pectine] meaning "to comb", the adjective [pectinate] means "resembling a comb". The term denotes structures that have well-formed parallel shapes, such as the pectinate muscle of the heart. The pectinate muscle can be clearly seen in the internal aspect of the atrial appendages. (see image, pointer "B")

The term [pecten] meaning "comb" is an old word used for the superior aspect of the pubic bone (os pubis) where the pectineus muscle attaches. The root term [-pectin-] can be seen then in terms such as the iliopectineal line, and the pectineal ligament, also known as "Cooper's ligament".

Pectinate Muscle [A]
The origin of the use of the term [pecten os pubis] to denote the area of attachment of the pectineus muscle to the bony ridge in the superior aspect of the pubic bone is obscure, but the pectineus muscle has well-marked parallel striations resembling a comb.  Note: The links to Google Translate include an icon that will allow you to hear the pronunciation of the word.

Original photograph by D. D. Anna
Note: The links to Google Translate include an icon that will allow you to hear the pronunciation of the word.

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