CSF production is primarily associated with choroid plexus within the ventricles, especially in which ventricle pair?

CSF production is primarily associated with choroid plexus within the ventricles, especially in which ventricle pair?

• A. Spinal canal
• B. Third ventricle
• C. Fourth ventricle
• D. Lateral ventricles

Answer: (D)

CSF production is carried out by the choroid plexus within the ventricles, and the largest contribution comes from the two lateral ventricles. These paired ventricles house the most extensive choroid plexus, so most CSF is secreted there. From the lateral ventricles, CSF flows through the foramen of Monro into the third ventricle, then via the cerebral aqueduct into the fourth ventricle and onward into the subarachnoid space. The third and fourth ventricles also have choroid plexus and contribute to production, but the bulk originates in the lateral ventricles. The spinal canal isn’t a ventricle and doesn’t produce CSF.

CSF production is carried out by the choroid plexus within the ventricles, and the largest contribution comes from the two lateral ventricles. These paired ventricles house the most extensive choroid plexus, so most CSF is secreted there. From the lateral ventricles, CSF flows through the foramen of Monro into the third ventricle, then via the cerebral aqueduct into the fourth ventricle and onward into the subarachnoid space. The third and fourth ventricles also have choroid plexus and contribute to production, but the bulk originates in the lateral ventricles. The spinal canal isn’t a ventricle and doesn’t produce CSF.