Question

question
all of the following are true of cerebrospinal fluid (csf), except.
answer
csf flows from the lateral ventricles to the third ventricle via the aqueduct of the midbrain.
most of the csf that reaches the fourth ventricles enters the subarachnoid space, and circulates around the brain and spinal cord.
at any time, there is about 150 ml of cerebrospinal fluid.
the entire volume of cerebrospinal fluid is replaced roughly every 8 hours.
i dont know yet

Explanation:

• Cerebrospinal fluid (CSF) flows from the lateral ventricles to the third ventricle via the interventricular foramen (not the aqueduct of the midbrain). The aqueduct of the midbrain (cerebral aqueduct) connects the third and fourth ventricles.
• CSF that reaches the fourth ventricle can enter the subarachnoid space (via the median and lateral apertures of the fourth ventricle) and circulate around the brain and spinal cord.
• At any given time, there is approximately 150 mL of CSF in the central nervous system.
• The entire volume of CSF (about 150 mL) is replaced roughly every 8 hours (as the rate of CSF production is about 500 mL per day).

Answer:

CSF flows from the lateral ventricles to the third ventricle via the aqueduct of the midbrain.