Question

Describe the relationship among the cerebrospinal fluid, the ventricles, the choroid plexuses, and arachnoid granulations (pp. 391-395).

A) Cerebrospinal fluid is produced in the ventricles by the choroid plexuses and drained through arachnoid granulations.
B) Cerebrospinal fluid is produced by the brain's cortex and flows into the ventricles where it is absorbed by the choroid plexuses.
C) Cerebrospinal fluid is produced in the choroid plexuses and fills the arachnoid granulations, which communicate with the ventricles.
D) Cerebrospinal fluid is produced in the arachnoid granulations and circulated through the ventricles, where it is absorbed by the choroid plexuses.

Answer 1

The cerebrospinal fluid is produced by the choroid plexuses in the ventricles and then circulates through the ventricular system and subarachnoid space before being reabsorbed into the blood at the arachnoid granulations.

Step-by-step explanation:

The relationship among the cerebrospinal fluid, the ventricles, the choroid plexuses, and arachnoid granulations is as follows:

1. The choroid plexuses in the four ventricles produce cerebrospinal fluid (CSF).
2. The CSF is circulated through the ventricular system and enters the subarachnoid space through the median and lateral apertures.
3. The CSF is reabsorbed into the blood at the arachnoid granulations, located where the arachnoid membrane emerges into the dural sinuses.