Musculi pectinati

The Musculi pectinati dress in the form of comb-like structures made of parts of the right atrium (atrium ) and the right and the left atrial appendage (auricle ). They are responsible for the rough surface of the inner walls.

In the right atrium resulting from the installation of leading- caval vein (sinus venosus Cruveilhieri ) is the rauwandige share the inner wall surface, the evolutionarily derived from the embryonic atrium, separated by the designated as the crista terminalis atrii dextri survey of the smooth-walled portion, developed. On the outer surface of the heart to the limit continues and is also known as the sulcus terminalis.

More muscles inside the heart - within the heart chambers - are the papillary muscles (musculi papillary ).