This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head & Neck, Subject name: Anatomy
Vein of Galen drains into- 
Select and explain. 
A. Straight sinus, B. Sigmoid sinus, C. internal jugular vein, D. Superior longitudinal sinus
A: Straight sinus
Answer: A: Straight sinus 
Explanation: Ans. is 'a' i.e., Straight sinus * Great cerebral vein of Galen: It is formed by the union of two internal cerebral veins, is 2 cm long and drains into the straight sinus. Its tributaries are:- (a) Internal cerebral veins, (b) Basal veins, (c) Occipital veins, (d) Posterior callosal vein