Match each structure in the heart with its corresponding description or function.
-heart chamber into which blood returning from the lungs enters

A)right atrium
B)left atrium
C)right ventricle
D)left ventricle
E)aortic semilunar valve
F)pulmonary semilunar valve
G)tricuspid valve
H)mitral valve
I)aorta
J)pulmonary artery
K)pulmonary vein
L)superior vena cava