Which sinus receives blood from the inferior sagittal sinus?

• A. Superior Sagittal Sinus
• B. Transverse Sinus
• C. Confluence of Sinuses
• D. Straight Sinus

Answer: (D)

The venous drainage pathway shows that the inferior sagittal sinus feeds into the straight sinus. The inferior sagittal sinus runs along the lower edge of the falx cerebri and, together with the great cerebral vein (vein of Galen), forms the straight sinus at the junction with the tentorium. From there, the straight sinus continues to the confluence of sinuses. The other sinuses mentioned aren’t the direct recipients of the inferior sagittal sinus: the superior sagittal sinus collects from the upper cerebral veins, the confluence of sinuses is a point where several sinuses meet before continuing posteriorly, and the transverse sinuses are the later, posterior extensions.