Question

Backflow of supraorbital and infraorbital go into?

(a) cavernosus sinus
(b) Superior sagittal sinus
(c) Internal jugular vein
(d) Transverse sinus

Answer 1

The backflow of the supraorbital and infraorbital veins drains into the cavernous sinus, which then drains into the internal jugular vein, integral to the CNS venous return system.

Step-by-step explanation:

The backflow of the supraorbital and infraorbital veins goes into the cavernous sinus, which subsequently drains into the internal jugular vein. The cavernous sinus collects blood from several veins, leading to the petrosal sinuses, and ultimately draining into the internal jugular vein. The internal jugular vein carries blood away from the brain alongside the carotid artery and empties into the brachiocephalic vein. This venous return system is crucial for maintaining proper circulation within the central nervous system (CNS).