A) epithalamus
B) filum terminate
C) cerebral ventricles
D) medula oblongata
Correct Answer: D
Solution :
Cerebrospinal fluid is found inside the ventricles of the brain the central canal of spinal cord and in the subarachnoid space arround the brain and spinal cord. Two-thirds of the cerebrospinal fluid secretes from the choroid plexuses in the four ventricles mainly in lateral two ventricles. The fluid secreted in the lateral ventricles passes first into the third ventricle than into the forth ventricle and finally through three small openings, two lateral foramina of Luschka and a midlin foramen of magendie entering the cisterna megna a fluid space that lies behind the medulla and beneath the cerebellum. The cisterna megna is continuous with the subarachnoid space that surrounds the entire brain and spinal cord.
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