Pectinate muscles - Musculi pectinati

Anatomical hierarchy

General Anatomy > Cardiovascular system > Heart > Right atrium > Pectinate muscles



Behind the terminal crest the internal surface of the atrium is smooth, while in front of it the muscular fibers of the wall are raised into parallel ridges resembling the teeth of a comb, and hence named the musculi pectinati.

This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from