Pectinate muscles
The pectinate muscles, in the form of comb-like structures, line parts of the right and left atrium ( atrium ) and the right and left atrial appendages ( auricula ). They are responsible for the rough surface of the interior walls.
In the right atrium, the rough-walled part of the inner wall surface, which develops evolutionarily from the embryonic atrium , is separated from the smooth-walled part, which develops from the anus of the confluent vena cava ( Sinus venosus Cruveilhieri ) , by the elevation called the crista terminalis atrii dextri . This border continues on the outer surface of the heart and is also known as the sulcus terminalis .
Other muscles inside the heart - within the heart chambers - are the papillary muscles ( Musculi papillare ).
Individual evidence
- ^ Herbert Lippert: Textbook anatomy. 7th expanded edition. Elsevier - Urban and Fischer, Munich 2006, ISBN 3-437-42362-2 , p. 234 f.
- ↑ De Gruyter (Ed.): Waldeyer Anatomie des Menschen . 19th edition.