Ventricles

The ventricles brain are composed of several parts: the lateral ventricles, the third ventricle and the fourth ventricle . The cerebrospinal fluid is in the interior of the ventricular system. the cerebrospinal fluid is an aqueous liquid which is located in the ventricles and the subarachnoid spaces. It is produced by the choroid plexus of the ventricles, which are like hair balls covered by epithelial cells. These cells absorb the aqueous fluid from the blood stream and secreted into the ventricles. Cerebrospinal fluid then passes from the ventricles into the subarachnoid space through the three openings or holes in the fourth ventricle. Once in the subarachnoid space, and becomes absorbed into the bloodstream via the arachnoid membrane, particularly through the arachnoid villi. Any blockage in the circulation of cerebrospinal fluid results in the appearance of growth known as ventricular name hydrocephalus . This condition can cause an overall growth of the head if it occurs at an early age, when the bones of the cranial cavity have not joined permanently. Cerebrospinal fluid produced continuously from the blood by the choroid plexus, can not be adequately absorbed in case of hydrocephalus. Humans possess on average a volume of cerebrospinal fluid that oscillates around 135 ml. This fluid forms a protective mantle against any bruises or sudden movement of the head, which otherwise would have serious consequences on brain integrity. Moreover, it also serves as biasing means into the cavity volume spinal fluid in the cranial cavity. For example, if they penetrate into the cranial cavity excessive amounts of blood, fluid shunt into the spinal cavity serves to accommodate additional quantities of blood in the cranial compartment. The cerebrospinal fluid may also serve to transport nutrients.