CSF, Ventricles and Meninges

Question 1

What does the CNS develop from?

Answer 1

Neural tube

Question 2

What are the chambers lined with?

Answer 2

Ependymal cells

Question 3

What are ependymal cells?

Answer 3

Line chambers
Single epithelial-like cells
Partly responsible for CSF production

Question 4

What does the ventricular system empty into?

Answer 4

Subarachnoid space

Question 5

What is the role of CSF?

Answer 5

Lymph drainage of the brain
Auto-regulation of cerebral blood flow
Provides mechanical and immunological protection

Question 6

Where is CSF mainly produced

Answer 6

Choroid plexus

Question 7

Where else is CSF derived from?

Answer 7

Seepage from capillaries

Water from metabolism

Question 8

Where does CSF circulate through?

Answer 8

Ventricular system and subarachnoid space

Question 9

What is the choroid plexus?

Answer 9

Network of blood capillaries in each ventricle

Question 10

What separates the ependyma of the ventricles from the surface?

Answer 10

Pia Matter

Question 11

What are the ventricles?

Answer 11

4 CSF filled chambers in the brain

Question 12

What does each cerebral hemisphere contain?

Answer 12

A lateral ventricle

Question 13

Where does the lateral ventricle begin?

Answer 13

Inferior horn in temporal lobe

Question 14

Which lobes does the lateral ventricle travel through?

Answer 14

Parietal and Frontal

Question 15

Where does the lateral ventricle terminate?

Answer 15

Interventricular Foramina- each connects to the central third ventricle

Question 16

Where does posterior horn of lateral ventricle protrude?

Answer 16

Occipital lobe

Question 17

Where does anterior horn of lateral ventricle protrue

Answer 17

Further into frontal lobe

Question 18

Where is the midline 3rd ventricle located?

Answer 18

Between Subcortical nuclei

Question 19

Where is the midline 4th ventricle located?

Answer 19

Brainstem

Question 20

What connects the lateral ventricles and the 3rd ventricle?

Answer 20

Interventricular foramina of Monro

Question 21

What runs between 3rd and 4th ventricle?

Answer 21

Aqueduct of Sylvius

Question 22

What links 4th ventricle to subarachnoid space?

Answer 22

Two lateral foramina of Luschka

One median foramen of Magendie

Question 23

What forms the roof of the 3rd ventricle?

Answer 23

Fornix

Question 24

Where is the 4th ventricle located?

Answer 24

Between the pons and the medulla anteriorly and the cerebellum posteriorly

Question 25

What is inferior to 4th ventricle?

Answer 25

Central canal of medulla oblongata

Question 26

What is superior to the 4th ventricle?

Answer 26

Aqueduct of Sylvius

Question 27

What forms the exit foramina for circulation of CSF between ventricles and subarachnoid space?

Answer 27

Foramina of Lushka and Magendie

Question 28

The meninges superficial to deep:

Answer 28

Dura matter, arachnoid matter and pia matter

Question 29

What is tightly adherent to endosteum of skull?

Answer 29

Dura matter

Question 30

What forms venous sinuses?

Answer 30

Seperation of dura matter from endosteum of skull

Question 31

What is the course of the falx cerebri?

Answer 31

Extends from crista galli to internal occipital protuberance

Question 32

What is the function of falx cerebri?

Answer 32

Protects hemispheres from torsional forces

Question 33

What is the course of tentorium cerebelli?

Answer 33

Runs between transverse sinus laterally and crest of petrous part of temporal bone anteriorly

Question 34

Function of tentorium cerebelli?

Answer 34

Supports the weight of the occipital lobes

Question 35

Where may venous blood leak?

Answer 35

Potential space between arachnoid matter and dura matter

Question 36

What fuses with fibrous epineurium of spinal nerves?

Answer 36

Pia matter

Question 37

What does the ophthalamic branch of the trigeminal nerve supply?

Answer 37

Supratentorial part of the dura and upper surface of the tentorium

Question 38

What does the anterior ethmoidal branch supply

Answer 38

Anterior cranial fossa (to lesser extent)

Question 39

What does the maxillary nerve supply?

Answer 39

Anterior part of middle cranial fossa

Question 40

What does the meningeal branch of mandibular nerve supply?

Answer 40

Posterior part of middle cranial fossa

Question 41

What supplies the tentorium cerebelli?

Answer 41

Meningeal branch of 9th cranial nerve

Question 42

WHat supplies the upper part of bony posterior fossa?

Answer 42

Meningeal branch of 10th cranial nerve

Question 43

What is the major blood supply of meninges?

Answer 43

Meningeal branch of maxiallary artery