True or false: The interstitial fluid in the brain and the cerebrospinal fluid in the intraventricular and subarachnoid spaces are separately compartmentalized.

True

Which structure produces CSF?

choroid plexus

Do choroid epithelial cells have tight or loose junctions?

tight

True or False: CSF can cross into venous blood, and venous blood can cross into CSF

false

Which pressure is greatest: venous blood or CSF?

CSF

True or False: The rate of CSF increases with increased pressure

false

CSF absorption exceeds formation when ICP is elevated. True or False?

True

As intracranial pressure increases, cerebral perfusion pressure ______ (increases or decreases).

decreases

Which of the following are a part of Cushing's triad?

hypertension

bradycardia

irregular respirations

Optic disc swelling is also called ________.

papilledema

Which surgical procedure can be performed to decrease intracranial pressure?

decompressive hemicraniectomy

True or false: Communicating hydrocephalus is due to an obstruction of flow in the subarachnoid space, while Noncommunicating hydrocephalus is due to an obstruction of flow in the ventricular system.

true

Which procedure involves placing an external ventricular drain for CSF to bypass obstructions and drain into a bag outside of the head?

ventriculostomy

What is the more permanent treatment for hydrocephalus called?

ventriculoperitoneal shunt

Select all of the locations of barrier sites in the CNS

brain endothelium

arachnoid epithelium

choroid plexus epithelium

Which structure provides a nearly continuous covering of capillaries in the BBB?

astrocyte endfeet

Select all of the substances that can freely cross the BBB

caffeine

O2

CO2

ethanol

Name the 3 principal transmembrane proteins that make up the tight junctions of the BBB

claudins, occludins, junctional adhesion molecules

claudins, occludins, and junctional adhesion molecules