CSF flow

Question 1

Where does the blood get filtered into CSF in the CNS

Answer 1

at the ventricular system

Question 2

Where are the ventricles of the brain

Answer 2

the right and left lateral vents are in the mid brain
the third vent is also in the midbrain slightly posterior to the lateral vents
the fourth vent is in the brain stem

Question 3

What filters the blood into CSF in the ventricles

Answer 3

the epithelium of specialized capillaries of the pia mater called the choroid plexus that project into the ventricles

Question 4

What are the three openings that allow CSF to enter the subarachnoid space

Answer 4

two formina of luschka in the fourth ventricle

foramen of magendie

Question 5

What is the pathway of the CSF

Answer 5

the CSF flows from the lateral ventricles into the third ventricle through the interventricular foramen, from the ventricle the CSF flows to the fourth ventricle through the cerebral aquaduct (sylvius), from the fourth CSF flow into the subarachnoid space, the CSF then returns into the vascular system by flowing into the supersagittal sinus

Question 6

What percentage of CSF flows into the subarachnoid space that surrounds the spinal cord

Answer 6

30%