The brachiocephalic veins are formed by the
A: Internal jugular veins
B: Right sigmoid sinus
C: Left sigmoid sinus
D: Subclavian veins
E: Straight sinus

Question

Quizplus · Accepted Answer

The brachiocephalic veins are formed by the internal jugular veins and the subclavian veins, which drain blood from the head, neck, and upper limbs. The right and left sigmoid sinuses drain blood from the brain and do not contribute to the formation of the brachiocephalic veins. The straight sinus also drains blood from the brain, but it merges with the confluence of sinuses to form the left sigmoid sinus. Therefore, answer choices A, B, and C are incorrect.

The Brachiocephalic Veins Are Formed by the