Cardiac anatomy from right to left

Aortic valve

Like the pulmonary valve, the aortic valve has three cusps.
Just cranially to it there is a slight dilatation of the aortic root.
This is the sinus of Valsalva.
It fills with blood during diastole, supplying the coronary arteries with oxygen-rich blood.
The image on the right shows that the coronary arteries originate fairly cranially, on the border of the ascending aorta.

3-chamber (left) and coronal (right) reconstructions, same as above

 The cusps of the aortic valves are named according to their relationship with the coronary arteries, namely the right coronary, left coronary and non-coronary cusp (R, L and N).

Axial reconstruction depicting the tricuspid aortic valve with its right and left coronary (R and L respectively) and non-coronary cusp (N)