Inferior vena cava and superior vena cava.
Veins.
They are called Veins just FYI the blood vessels that bring blood away from the heart are called arteries
The heart and your blood vessels
Three parts of the cardiovascular system are the heart, blood vessels (arteries, veins, and capillaries), and blood. The heart pumps blood through the blood vessels to deliver oxygen and nutrients to the body's tissues and organs.
Arteries are the blood vessels that send blood away from the heart. Veins, in contrast, bring blood to the heart.
'Arteries' take blood away from the heart. 'Veins' take blood back to the heart.
clarites and slimaries
superior vena cava
The coronary arteries are the blood vessels that bring oxygenated blood to the muscle of the heart.
Arteries ALWAYS bring blood away from the heart. Vein bring it back.
Those are called veins.
The inferior and superior vena cavas bring blood from the body to the right side of the heart. The pulmonary veins bring blopd from the lungs to the left side of the heart.