This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Magendie foramen or the median apeure drains CSF from which of the following structures to the cisterna magna? 
Select and explain. 
A. Lateral ventricle, B. 3rd ventricle, C. 4th ventricle, D. Interpeduncular fossa
C: 4th ventricle
Answer: C: 4th ventricle 
Explanation: The median apeure ("Foramen of Magendie") drains CSF from the fouh ventricle into the cisterna magna. Cisterna magna occupies the interval between inferior surface of cerebellum and posterior aspect of medulla oblongata. The two lateral apeures (foramina of Luschka), one on the left and one on the right, are the primary routes for drainage of cerebrospinal fluid from the fouh ventricle into the cerebellopontine angle cistern. The foramen on axial images is posterior to the pons and anterior to the caudal cerebellum.