Question

All veins carrying deoxygenated blood combine into a single vein called__. This vein connects to the heart at the right atrium.

Answer 1

The vena cava is the largest vein in the body. All veins combine into the vena cava. The vena cava is actually of two types: the superior vena cava and the inferior vena cava which are together simply called vena cava. They connect to the right atrium of the heart.