right atrium
US /ˌraɪt ˈeɪ.tri.əm/
UK /ˌraɪt ˈeɪ.tri.əm/
1.
the right upper chamber of the heart that receives deoxygenated blood from the body through the vena cavae and pumps it into the right ventricle
:
•
Deoxygenated blood enters the heart through the right atrium.
•
The tricuspid valve separates the right atrium from the right ventricle.