left atrium | right atrium | left ventricle | right ventricle | |
---|---|---|---|---|
A. | oxygenated |
oxygenated |
deoxygenated |
deoxygenated |
B. | deoxygenated |
deoxygenated |
oxygenated |
oxygenated |
C. | oxygenated |
deoxygenated |
oxygenated |
deoxygenated |
D. | deoxygenated |
oxygenated |
deoxygenated |
oxygenated |