Question

Brachiocephalic veins are created when two different veins, the ______ and the ________, unite.

A. Internal jugular veins, subclavian veins
B. External jugular, internal jugular veins
C. External jugular veins, subclavian veins
D. Common carotid, subclavian veins

Answer 1

The brachiocephalic veins are created by the union of the internal jugular veins and the subclavian veins, which collect and drain blood from the upper thorax, head, and neck into the superior vena cava.

Step-by-step explanation:

The brachiocephalic veins are formed by the union of two veins, which are the internal jugular veins and the subclavian veins. The brachiocephalic veins are a pair of large veins that drain blood from the upper thorax, head, and neck into the superior vena cava.

The internal jugular veins collect blood from the brain and the superficial parts of the face and neck, while the subclavian veins drain the upper limbs and parts of the thorax. These vessels play a crucial role in returning deoxygenated blood back to the heart.