Hydrocephalus

• The obstruction of CSF flow within the ventricular system.
• The active distension of the ventricular system of the brain due to an imbalance between CSF production and absorption. (correct)
• The expansion of ventricles secondary to brain shrinkage from a diffuse atrophic process.
• The obstruction to CSF flow outside the ventricular system.

• CSF is secreted predominantly by the choroid plexus of the lateral, third, and fourth ventricles. (correct)
• CSF flows in a caudal direction through the ventricular system and exits through the foramina of Luschka and Magendie into the subarachnoid space.
• CSF absorption occurs through the arachnoid granulations into the venous system.
• CSF is produced at a rate of 500 ml/day (0.35 ml/min).

• 1 in 100,000 births
• 1 in 10,000 births
• 1 in 1,000 births (correct)
• 1 in 100 births

<p>CSF flows in a caudal direction through the ventricular system and exits through the foramina of Luschka and Magendie into the subarachnoid space. (A)</p> Signup and view all the answers

<p>'Obstructive' hydrocephalus is the obstruction of CSF flow within the ventricular system, while 'communicating' hydrocephalus is the obstruction to CSF flow outside the ventricular system. (C)</p> Signup and view all the answers