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tricuspid valve
No, it is efferent
The Pulmonary Vein carries oxygenated blood (blood carrying oxygen) to the heart from the lungs and the other superior vena cava and the inferior vena cava (both are veins also) carries de-oxygenated blood (blood not carrying oxygen) to the heart from the body.
Inferior vena cava
efferent
vena cava
ductus venosus
The inferior vena cava is the largest vein, and connects to the right atrium of the heart. The other large vein is the superior vena cava, which receives blood from the upper half of the body.
both the superior and inferior vena cava pump the blood into the right atrium. Then, the right atrium pumps the blood through a valve, and into the right ventricle.
Vena Cava
Primarily, the superior Vena Cava which generally draws blood from the upper part of the body, the Inferior Vena Cava will draw blood from the lower half. The Aorta will be the main vessel(s) to pump blood OUT of the heart.
th blood vessel that goes to the right atrium is cava