Meningeal Coverings and the Ventricular System Flashcards Preview

Pathology > Meningeal Coverings and the Ventricular System > Flashcards

Flashcards in Meningeal Coverings and the Ventricular System Deck (18):
1

What are the 3 different meningeal coverings?

- Dura
- Arachnoid
- Pia Mater

2

Is there epidural space in the skull?

No - it is only found in the spine

3

What are the functions of the dura mater?

• Provides mechanical strength
• Separates different intracranial components

4

Is the dura pain sensitive?

Yes

5

What are the functions of the arachoid?

Thin, avascular, several layers of cells adhering to the dura with a barrier function

6

Where are the cerebral veins and arteries found?

Subarachnoid Space - it is filled with CSF

7

How does CSF enter the venous system?

Through the arachnoid villi

8

What are the functions of the pia mater?

Covers the surface of the brain and closely follows its external surface

9

Denticulate Ligaments

Anchor the spinal cord to the arachnoid

10

Filum Terminale

Anchors the caudal spinal cord to the caudal end of the spinal dural sheath

11

What is the perivascular space where vessels enter and leave the brain?

Virchow-Robin Space

12

Spinal Epidural Space

Spinal epidural space is between periosteum and dura

13

What is the flow of CSF?

1. Made in the ventricles
2. Flows out the median and lateral apertures
3. Into the cisterns
4. Through the tentorial notch
5. Through the arachnoid villi to the venous sinuses

14

Where is the CSF made?

Choroid Plexus mainly with some from the capillary bed crossing the BBB as interstitial fluid

15

Arachnoid Villi

Outpouchings of the subarachnoid space that connect it to venous sinuses to allow for the dumping of CSF

16

What is the corollary of the lymphatics in the brain?

Glymphatics

17

What is the role of the circumventricular organs?

Sensory organs that sense the milieu of the blood, CSF, etc that are important in regulation

18

What space in the brain is pathologic?

Epidural

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