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Regarding the borders of the heart and the cardiac silhouette seen on a normal P-A CXR:
Select true or false for each option, then select Submit.
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A. False. The left ventricle only contributes a narrow strip to the anterior surface of the heart. The right ventricle forms the greater part.
B. False. The posterior surface of the heart is formed by the left atrium and the pulmonary veins.
C. True.
D. False. The left-sided hilar vessels are higher than the right as the left main pulmonary artery passes over the left main bronchus, whilst the right main pulmonary artery passes in front of the right main bronchus.
E. True.
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