For Providers -- Atlas of Human Anatomy

Cross section through the vestibule, the aorta and pulmonary artery are seen from above as well as the valves of the two ventricles all of which are closed.

Translated by: Ronald A. Bergman, PhD and Adel K. Afifi, MD, MS
Peer Review Status: Internally Peer Reviewed

a) Atrial septum.
b) Wall of the left vestibule.
c) Wall of the right vestibule.
d) Tricuspid valve, right atrioventricular ostium.
e) Mitral valve, left atrioventricular ostium.
f) Semilunar cusp of the right (arterial) ostium (s. pulmonale).
g) Semilunar cusp of the left arterial ostium (s. aorticum).
h) Left auricle.
i) Right auricle.

1. right coronary artery.
2. left coronary artery.