TOPICS: Lateral ventricles, third ventricle, fourth ventricle, interventricular foramina of Monro, cerebral aqueduct, subarachnoid space, foramen of Magendie, foramina of Luschka, area postrema, vomiting, subarachnoid space, arachnoid granulations, superior sagittal sinus, inferior sagittal sinus, straight sinus, transverse sinus, confluence of sinuses, sigmoid sinus, falx cerebri, tentorium cerebelli, cerebrospinal fluid (CSF), communicating hydrocephalus, noncommunicating hydrocephalus, ex vacuo, dural venous sinuses, dura mater, cavernous sinus, ophthalmic vein, meninges
