Ventricular system

Question 1

what is a ventricle?

Answer 1

A ventricle is a fluid filled space developed from the neural canal - cavity of the neural tube. it is lined by ependyma (lining of glia cells)

Question 2

How many ventricles do we have

Answer 2

4 interconnected cavities filles with CSF 2 lateral 3rd ventricle 4th ventricle

Question 3

how do the ventricles communicate?

Answer 3

The lateral ventricle to third via interventricular foramen of Monro The third to fourth via the central aquaduct of sylvius The fourth to the subarachnoid space via - 2 lateral foramina (Magendie) - 1 median foramen (Luschka) The fourth ventricle then narrows and formes the canal of the spinal cord.

Question 4

What are the circumventricular organs?

Answer 4

spaces where there is no BBB

Question 5

Name the circumventricular organs

3 sensory

2 secretory

Answer 5

Sensory

1. area posterma
2. vascular organ of lamina terminalis
3. subfornical organ

Secretory

4. subcommissural organ
5. median eminence

Question 6

Name the parts of the lateral ventricle

Answer 6

1. frontal/ anterior horn
2. cental part/ body
3. atrium
4. occipital/posterior horn
5. temporal/inferior horn

Question 7

where is the third ventricle located?

Answer 7

Unpaired space between the left and right thalamus and hypothalamus

Question 8

Where is the fourth ventricle located?

Answer 8

pyramidal space between the brainstem (pons + medullaobligata) and the cerebellum

Question 9

what is CSF?

Answer 9

cerebrospinal fluid

is is the lymph of the brain

Question 10

what is the CSF circulatin?

Answer 10

from blood capillarys to ventricular spaces to subarachnoid space to dural sinuses to venous system