Ventricular System

Question 1

Type of ventricles

Answer 1

2 lateral ventricles
3rd ventricle
4th ventricle

Question 2

Structure producing csf

Answer 2

Choroid plexus

Question 3

Liquid in ventricles

Answer 3

CSF

Question 4

Embryologie origin of ventricle

Answer 4

Neural canal of neural tube

Question 5

How are lateral and third ventricle formed

Answer 5

Neural canal dilation in prosencephalon

Question 6

Origin of cerebral aqueduct

Answer 6

Cavity of mesencephalon

Question 7

Origin of fourth ventricle

Answer 7

Neural canal dilatation in rhombencephalon

Question 8

Choroid plexus origin

Answer 8

Tuft of capillaries invaginate roofs of prosencephalon and rhombencephalon

Question 9

Largest ventricle

Answer 9

Lateral ventricles

Question 10

Divisions of lateral ventricles

Answer 10

Body

3 horns

Question 11

Connection of lateral ventricle to 3rd ventricle

Answer 11

Interventricular foramina

Question 12

Part of lateral ventricle with choroid plexu s

Answer 12

Body

Temporal horn

Question 13

Connection between thrid and 4th ventricle

Answer 13

Cerebral aqueduct

Question 14

Location of fourth ventricle

Answer 14

Posterior to pons and upper medulla oblongata

Anterior inferior to cerebellum

Question 15

Floor of fourth ventricle

Answer 15

Rhomboid fossa

Question 16

Connection between fourth ventricle and subarachnoid space

Answer 16

Lateral foramen of luschka

Foramen of magendie ( midline )

Question 17

Csf flow factors

Answer 17

Hydrostatic pressure
Arterial pulsation of large arteries
Directional beating of ependymal cilia

Question 18

Csf volume in communicating system

Answer 18

150 ml

Question 19

Production rate of csf

Answer 19

20ml/h

Question 20

Amount of csf produced and absorbed daily

Answer 20

400-500ml

Question 21

Normal pressure in CSF

Answer 21

5-15 mmHg

Question 22

Functions of CSF

Answer 22

Support brain during evolution
Protection against external trauma
Remove metabolites from neuronal and glial cell activity
Transport of active substance like hormones and neuropeptides

Question 23

3 main barriers of BBB

Answer 23

Vascular endothelial barrier
Blood-CSf barrier
Subarachnoid barrier -

Question 24

BBB functions

Answer 24

Prevent entry of harmful substances into CNS
Maintain Ion and volume regulation
Maintain Metabolic and immunologic function

Question 25

Intracranial pressure components

Answer 25

Brain parenchyma Intracranial CSF Cerebral blood volume

Question 26

Condition in which there is increased ICP

Answer 26

Neoplasia Hemorrhage Inflammation Hydrocephalus

Question 27

Hydrocephalus types

Answer 27

Communicating | Non communicating

Question 28

Congenital hydrocephalus

Answer 28

Dandy walker syndrome Chiari malformation Congenital brain tumors (choroid plexus papillloma ) Hydrancephaly

Question 29

Hydrocephalus presentation in infants

Answer 29

``` Irritability Lethargy Poor feeding Vomiting Failure to thrive ```

Question 30

Adults hydrocephalus presentation

Answer 30

Headache Vomiting Diplopia Papilledema

Question 31

Management of hydrocephalus

Answer 31

``` Conservative Surgical (shunting and endoscopic 3rd ventriculostomy) ```