Question

What two vessels come together to form the superior vena cava?

a) Right subclavian vein and right internal jugular vein
b) Left subclavian vein and left internal jugular vein
c) Right and left brachiocephalic veins
d) Right pulmonary vein and left pulmonary vein

Answer 1

The right and left brachiocephalic veins come together to form the superior vena cava.

Step-by-step explanation:

The two vessels that come together to form the superior vena cava are the right and left brachiocephalic veins. The brachiocephalic veins are formed from a fusion of the external and internal jugular veins and the subclavian vein. They receive blood from the subclavian, external and internal jugulars, vertebral, and internal thoracic veins, and drain the upper thoracic region, leading to the superior vena cava.