Answer:
Ventricles:One of the hollow spaces within the brain, filled with cerebrospinal fluid.
Explanation:
cerebrospinal fluid
A clear fluid, similar to blood plasma, that fills the ventricular system of the brain and the subarachnoid space surrounding the brain and spinal cord.
<u>Ventricle of brain</u>
The ventricles of the brain are a communicating network of cavities filled with cerebrospinal fluid (CSF) and located within the brain parenchyma. The ventricular system is composed of 2 lateral ventricles, the third ventricle, the cerebral aqueduct, and the fourth ventricle.
