Atlas Images
Right atrium, internal structure, anterior view
  1. Sinus venarum
  2. Terminal crest
  3. Fossa ovalis
  4. Rim or limbus of the fossa ovalis
  5. Musculi pectinati
  6. Valve of the inferior vena cava
Image Copyright 1997 The Anatomy Project, Published by Parthenon Publishing Group, Unauthorized use prohibited.