Cranial Cavity, Meninges and CSF Flashcards Preview

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Flashcards in Cranial Cavity, Meninges and CSF Deck (47):
1

What part of the floor of the cranial cavity cradles the frontal lobe

The anterior cranial fossa

2

What part of the floor of the cranial cavity cradles the temporal lobe?

Middle Cranial fossa

3

What part of the floor of the cranial fossa cradles the cerebellum and the brain stem?

Posterior Cranial fossa

4

What bones make up the anterior cranial fossa?

Ethmoid, Frontal bone, and Sphenoid bone

5

What bones make up the middle cranial fossa?

Spheroid bone, and temporal bone,

6

What bones make up the posterior cranial fossa?

Occipital bone, and part of the temporal bone

7

What are the meningeal layers from superficial to deep?

Dura Mater
Arachnoid Mater
Pia mater

8

The Dura Pater splits into what two layers?

Meningeal
endosteal

9

What specialized piece of Dura mater separates the two hemispheres of the brain and attaches superiorly on the brain

Falx Cerebri

10

What specialized piece of Dura matter attaches to the four clenoid process for the pituitary.

Diaphragma sella

11

What specialized piece of dura mater sit on the Occipital crest and split the brain into two hemispheres

Falx cerebelli

12

What specialized piece of dura mater sits over the cerebellum splitting the cerebellum from the cerebrum

tentorium cerebelli

13

If there is a Herniation in a space then the what will happen to the structures in the space?

They will shift

14

What are the four cisterns

Superior cistern
Cisterna magna
Pontine cistern
Interpenduncular

15

If there is an Uncal Herniation what cranial nerve would be compromised?

Oculomotor nerve Cranial nerve 3

16

If there is a tonsillar Herniation what major structure would be compromised?

Medulla

17

Where is the site of fluid transfer in the cranial meninges?

The Arachnoid granulations

18

Describe Arachnoid mater

Mesh-like
Semi-transparent

19

What space contains the CSF and blood vessels in the meninges

Subarachnoid space

20

T/F the cranial meanings does not have an epidural space

True

21

During development what arises from the leptomeninges

Pia and arachnoid

22

Where do lymphatic vessels in the dura empty?

Into the deep cervical nodes

23

What are the three meningeal arteries?

Ophthalmic, Occipital and vertebral arteries

24

What provides innervation for the meninges above the tentorium cerebelli

Meningeal branches of trigeminal nerve (CN V)

25

What provides innervation for the cranial meanings below the tentorium cerebelli

Meningeal branches of cervical spinal nerves 1-3

26

What part of the midbrain goes through the free margin of the tentorial notch?

Rostral part of the midbrain

27

What are the two major functions of CSF

-Protection and support
-Pathway for metabolites

28

How can one tell if a patients choroid plexi are calcified

They appear in x-rays

29

What kind of tissue lines the choroid plexus?

Ciliated Simple cuboidal epithelium,

30

The choroid plexus is the expansion of ____ lining the ventricles

Ependymal epithelium

31

After CSF is produced in the Choroid plexus of the lateral ventricles, how does the CSF enter the third ventricle?

Through the interventricular foramina

32

Tight junctions of the epithelial cells on the choroid plexus form what?

The blood CSF barrier

33

What is the purpose of the blood-CSF barrier?

To regulate the transport of macromolecules

34

CSF production is mediated by the exchange and transport of ____ across the epithelium

Ions (CL-, Na+, HCO3)

35

What is the purpose of the osmotic gradient in the choroid plexus?

Drives H2O from the blood and into the ventricular lumen

36

The 5 secondary ventricles are remnants of what embryological structure?

Neural tube

37

The lateral ventricles are remnants of what neural tube structure?

Telencephalon

38

What secondary vesicle is remnant of the diencephalon?

Third ventricle

39

The Cerebral aqueduct is remnant of what neural tube structure?

Mesencephalon

40

What secondary vesicle is remnant of the both the mesencephalon and myelencephalon?

The fourth ventricle

41

The caudal part of the myelencephalon and spinal cord make up the ____ in adults

Central canal

42

CSF from the choroid plexus in the lateral ventricles and the third ventricles flows to the fourth ventricle through what structure?

Cerebral Aqueduct

43

CSF enters the Subarachnoid space through what openings from the fourth ventricle?

The median aperture and lateral apertures

44

CSF is found in what meningeal space?

The Subarachnoid space

45

CSF leaving the median aperture enters what cistern?

Cisterna Magna

46

CSF leaving the lateral apertures enters what cistern?

Pontine cistern

47

Once CSF leave the SA space through the glymphatic system it enters 3 pathways. What are the path ways?

-Arachnoid granulations
-Villi of spinal veins in IVFs
-Perineurial sheaths of cranial and spinal nerves and olfactory bulb (across the cribiform plate to the nasal submucosa)