Question

Which is not a vessel that brings blood directly into the right atrium?

Answer 1

Coronary Sinus does not transport blood directly into the right atrium.

Explanation:

• "Coronary sinus" is a group of veins joined collectively to form a big vessel that accepts blood from the myocardium.
• It is positioned along the heart's posterior surface between the left ventricle and left atrium.
• The outline of the vein is larger than normal and is huge enough to enable blood to be collected by most veins that enter the heart.
• The coronary sinus receives the maximum of the cardiac venous blood.
• It releases blood with less oxygen to the right atrium, like how "superior and inferior venae cavae" does.
• It is found in "mammals", including humans.