NB2-5.1 - Ventricles, CSF, Veins, and Sinuses DLAs

Question 1

What are the major brain structures associated with the lateral ventricles?

Answer 1

Cerebral Cortex

Basal Ganglia

Hippocampus

Olfactory Bulb

Basal Forebrain

Question 2

What are the major brain structures associated with the third ventricles?

Answer 2

Thalamus

Hypothalamus

Question 3

What are the major brain structures associated with the cerebral aqueduct?

Answer 3

Midbrain

Question 4

What major brain structures are associated with the fourth ventricle?

Answer 4

Cerebellum and pons with the pontine fourth ventricle

Medulla with medullary fourth ventricle

Question 5

Answer 5

Question 6

Through which cerebral lobes do the lateral ventricles pass?

Answer 6

All of them

Question 7

What is the most likely place for a ventricular occlusion to occur?

Answer 7

The cerebral aqueduct

Question 8

What is the rhomboid fossa?

Answer 8

If you were to remove the cerebellum to observe the fourth ventricle from the posterior aspect, you would notice a diamond shaped depression. That is the rhomboid fossa.

Question 9

Describe where choroid plexus tissue is found and what type of tissue it develops from?

Answer 9

Choroid plexus tissue develop from pia mater that has migrated into the ventricles.

It is found in two lengths. One length begins at the roof of inferior horn and follows that wall all the way throuth the foramen on Monro and to cover the roof of the thrid ventricle. The other length is found primarily within the lateral recess of the fourth ventricle and the areas inferior to that recess.

Question 10

How can the ventricular system help prevent ischemia?

Answer 10

If the choroid plexus decreases the amount of CSF its producing then blood flow to those areas will increase.

Question 11

What structures beside the choroid plexus produce CSF?

Answer 11

Ependymal Cells

Astrocytes

Some Pia and Arachnoid vessels

Question 12

How are ions and water transported into the CSF.

Answer 12

CSF producing cells will actively transport ions into the CSF from the blood and water will passively follow

Question 13

Answer 13

Question 14

T/F - all types of hydrocephalus caused by an obstruction are considered to be non-communicating hydrocephalus.

Answer 14

False

A subarachnoid hemorrhage could compress the ventricular system in such a way that it blocks the flow of CSF. This would still be considered a communicating hydrocephalus.