NEET PG DENTAL EXAM

Detailed explanation-1: -Hydrocephalus is the buildup of fluid in the cavities (ventricles) deep within the brain. The excess fluid increases the size of the ventricles and puts pressure on the brain. Cerebrospinal fluid normally flows through the ventricles and bathes the brain and spinal column.

Detailed explanation-2: -Ventricles and Cerebrospinal Fluid A series of interconnected, fluid-filled cavities called ventricles lie within the brain. The fluid is cerebrospinal fluid (CSF), which also circulates over the outside of the brain and spinal cord.

Detailed explanation-3: -Hydrocephalus ex-vacuo occurs when a stroke or injury damages the brain and brain matter actually shrinks. The brain may shrink in older patients or those with Alzheimer’s disease, and CSF volume increases to fill the extra space. In these instances, the ventricles are enlarged, but the pressure usually is normal.