Cerebrospinal fluid
A)is formed by the choroid plexuses
B)is formed by the arachnoid villi
C)separates the blood and brain to form the blood-brain barrier
D)is formed only in the ventricles of the cerebrum
E)enters the blood at the choroid plexuses

Question

Quizplus · Accepted Answer

Cerebrospinal fluid is formed by the choroid plexuses, which are networks of capillaries in the ventricles of the brain.

Answer: B 
 Arachnoid villi are responsible for reabsorbing cerebrospinal fluid, not forming it.

Answer: C 
 While cerebrospinal fluid does help form the blood-brain barrier, it does not separate blood and brain.

Answer: D 
 Cerebrospinal fluid is formed in the ventricles of the brain, but not exclusively in the cerebrum.

Answer: E 
 Cerebrospinal fluid does not enter the blood at the choroid plexuses, as they are responsible for forming the fluid in the first place.

Cerebrospinal Fluid