Flow of Cerebrospinal Fluid Exercise 20 AP

CSF continues to flow into the inner part of the spinal cord by flowing through the tiny (10) of the spinal cord, as well as around the exterior of the spinal cord in the (11) space.

median apertures, subarachnoid (space)

The two lateral ventricles are separated by a thin membrane called the (6).

septum pellucidum

The CSF leaves the fourth ventricle through the three openings: the median aperture and two lateral apertures. CSF is now located in the (9) space around the brain, and circulates all around the cerebrum and the cerebellum.

subarachnoid (space)

The venous sinus that overlies the brain superiorly is called the (13).

superior sagittal sinus

CSF flows by cilia movement from the two lateral ventricles through the interventricular foramen to the (7).

third ventricle

Because CSF is continually being made at the rate of about 20 mL/hr, it has to exit back into the bloodstream by being reabsorbed through the (12) that protrude into the dural venous sinuses.

arachnoid vili

From here, the CSF flows through the (8) into the fourth ventricle.

cerebral aquaduct

Fluid from the CSF is derived from the bloodstream. The sites of CSF formation are the (1), special tiny capillaries located in the walls of (2), (3), and (4).

choroid plexus, lateral ventricles, third ventricle, fourth ventricle

Cells that line the ventricles have cilia that move the CSF and are called (5).

ependymal cells