Preview next quiz:
Un-oxygenated blood enters the right atrium from the top of the heart.
A. inferior vena cava
B. superior vena cava
C. aorta
Disclaimer:
Medical Quiz should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational and educational purposes only.