Question

question 12 1.67 pts 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 b, c, e a, d a, c, d b, d, e a, b, e

Explanation:

The brachiocephalic veins are formed by the union of the internal jugular veins and the subclavian veins. The other options (right sigmoid sinus, left sigmoid sinus, straight sinus) are related to the dural venous sinuses and not involved in the formation of brachiocephalic veins.

Answer:

A. Internal jugular veins, D. Subclavian veins