Ch5 Ventricular Sysyem

Question 1

_________ are fluid-filled chambers lined with epithelial cells

Answer 1

Ventricles

Question 2

___________ floats the brain but also regulates the fluid that surrounds neutrons and glia and allow distribution of chemicals in the system

Answer 2

CSF

Question 3

_______ makes and secretes CSF

Answer 3

Choriod plesxus

Question 4

Answer 4

Question 5

Name the orientation of these surrounding parts of lateral ventricle

Caudate Nucleus _____
Corpus Callusom _____
Hippocampus ____
Thalamus ____
Septum pellucidum ____

Answer 5

Caudate Nucleus laterally
Corpus Callusom superiorly
Hippocampus inferiorly (horn)
Thalamus posteriorly
Septum pellucidum medially

Question 6

which ventricle runs runs through the diencephalon on midline ?

Answer 6

Third

Question 7

_____ is in the middle of third ventricle

Answer 7

Massa intermedia (interthalamic adhesion)

Question 8

____ is anterior to the third ventricle

Answer 8

Anterior is lamina terminalis (where rostrum of CC ends)

Question 9

______ ventricle is between the pons/medulla and the cerebellum

Answer 9

Forth

Question 10

_______ is roof (white matter) of forth ventricle

and _______ is bottom

Answer 10

superior medullary (medulla) velum is roof (white matter) / inferior medullary velum

Question 11

_______is where ventricles interact with the subarachnoid space

Answer 11

4th ventricle

Question 12

Most of CSF is in subarachnoid space ? ventricles ?

Answer 12

subarachnoid space

Question 13

__________ are strands of cells and vascular capillaries that secrete CSF into ventricles

Answer 13

Choroid Plexus

Question 14

Choroid Plexus found in which ventricles ?

Answer 14

CP found in all 4 ventricles where ventricle meets pia

Question 15

Choroid Plexus biggest in whch part ?

Answer 15

CP biggest in atrium (trigone) and is called glomus (all of thread)

Question 16

CP is membrane between ______ and ______.

Answer 16

CP is membrane between blood (from capillaries) and CSF

Question 17

CSF flow:

_____ -> ______ ->_______ -> _______ -> _____ -> ______ -> _________

Answer 17

Lateral ventricles -> Interventricular foramen -> third ventricle -> Cerebral aqueduct -> Fourth Ventricle -> subarachnoid space -> to central canal

Question 18

Answer 18

Question 19

_________ Controls and balances ion concentration of extracellular fluid that surrounds neurons and glia.

Answer 19

CSF

Question 20

________ Might also help transport (hermonal) neurotransmitter where they need to go.

Answer 20

CSF

Question 21

________ produce a half litre per day completely 2-3 times / day

Answer 21

CSF

Question 22

Answer 22

Question 23

Distribution of CSF flow causes ____________

Answer 23

hydrocephalus

Question 24

___________ happens if bath blocked and CSF continues to pump and expand ventricles

Answer 24

Hydrocephalus

Question 25

what are the two types of Hydrocephalus

Answer 25

• Communicating (only 1 lat vent is blocked , so ventricles and subarachnoid can still communicate)
• noncommunicating (obstructive) - worse

Question 26

Describe what it can be differentiated by each techniques: X-ray , CT or CAT , MRI

Answer 26

X-ray (2D only) no brain differentiation.
CT or CAT scans (several 2D slices, differentiates bone, CSF, grey matter, white matter)
MRI (3D) can differentiate brain regions.

Question 27

Pros and Cons of Computed Tomography (CT) ?

Answer 27

Pros : cheap and fast.
Cons: exposure to radiation and low resolution.

Question 28

Pros and Cons of MRI

Answer 28

Pros: very clear images of soft tissue at voxels level, not radioactive.

Cons: Cost and time (~ 30 mins), Metal