Final answer:
Central venous catheter lines end in the superior vena cava, inferior vena cava, and the right atrium.
Step-by-step explanation:
The central venous catheter lines end in the superior vena cava, inferior vena cava, and the right atrium. These are the major systemic veins of the body that carry blood back to the heart. The superior vena cava receives blood from the upper body, while the inferior vena cava receives blood from the lower body. Both veins empty into the right atrium of the heart.