MCQ IN MEDICINE

Detailed explanation-1: -CSF produced in the lateral ventricles travel through the interventricular foramina to the third ventricle, through the cerebral aqueduct to the fourth ventricle, and then through the median aperture (also known as the foramen of Magendie) into the subarachnoid space at the base of the brain.

Detailed explanation-2: -The CSF exits the subarachnoid space by diffusing through the walls of arachnoid granulations. The arachnoid granulations provide a valvular mechanism for the flow of CSF, which allows the inflow of CSF into the bloodstream without permitting the backflow of blood into the CSF.

Detailed explanation-3: -Recesses of the Fourth Ventricle Laterally, it extends into the subarachnoid space through an aperture called the foramen of Luschka. Through this foramen, a part of the choroid plexus of the fourth ventricle also protrudes.

Detailed explanation-4: -The foramen of Magendie, also known as median aperture, is one of the foramina in the ventricular system and links the fourth ventricle and the cisterna magna. It is one of the three sites that cerebrospinal fluid (CSF) can leave the fourth ventricle and enter the subarachnoid space.