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ANATOMY > 6.2b The Meninges and the ventricular system > Flashcards

6.2b The Meninges and the ventricular system Flashcards

1
Q

The dura mater ends inferiorly on the ___ at the ___ vertebrae

A

On the filum terminale at the lwoer border of S2 vertebrae

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2
Q

Large endothelium-;lined spaces between periosteal and meningeal layers of the dura mater

A

Venous sinuses

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3
Q

Four major septa of dura mater

A

Falx cerebri
Tentorium cerebelli
Falx cerebelli
Diaphragma sella

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4
Q

Septa of dura mater that extends into the longitudinal fissure which divides the cerebral hemispheres

A

Falx Cerebri

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5
Q

Septa of dura mater that roofs over the posterior cranial fossa

A

Tentorium cerebelli

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6
Q

This is the union of the inferior sagittal sinus and the great cerebral vein of Galen

A

Straight sinus

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7
Q

Septa of dura mater that separates the occipital lobes and temporal form the cerebellum

A

Tentorium cerebelli

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8
Q

The large opening in the free anterior border of tentorium cerebelli which allows the passage of upper brainstem, aqueduct, and vessels

A

Incisura tentorii

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9
Q

Septa of dura mater that is located in between the cerebellar hemispheres attached to the internal occipital crest

A

Falx cerebelli

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10
Q

T/F: the Falx cerebelli only partially divides the cerebellar hemispheres

A

True

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11
Q

Septa of dura mater that connects the clinoid attachments of the tentorium cereblli and roofs over sella turcica

A

Diaphragma sella

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12
Q

Most important arterial supply of dura

A

Middle meningeal artery from maxillary artery

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13
Q

Importance of middle meningeal artery

A

Can be damaged in head injuries producing epidural hematoma

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14
Q

The landmakr for the location of middle meningeal artery

A

Pterion

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15
Q

Meningeal veins of the dura drain into the

A

either the pterygoid venous plxus or into the sphenoparietal sinus

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16
Q

Sinus which occupies the upper fixed border of falx cerebri, receives superior cerebral veins

A

Superior sagittal sinus

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17
Q

At the internal occipital protuberance, the superior sagittal sinus is dilated to form the__

A

confluence of sinuses

18
Q

Sinus which occupies the free lower margin of the falx cerebri

A

Inferior sagittal sinus

19
Q

Sinus which occupies the line of junction of the falx cerebri with tentorium cerebelli

A

Straight sinus

20
Q

Forms the transverse sinus

A

Straight sinus

21
Q

Direct continuation of the transverse sinuses

A

Sigmoid sinuses

22
Q

Sinus the occupies the attached margin of the falx cerebelli that communicates with the vertebral veins and drains into the confluence of sinuses near the foramen magnum

A

Occipital sinus

23
Q

Sinus found in the middle cranial fossa lateral on each side of sella turcica

A

Cavernous sinuses

24
Q

the cavernous sinuses communicates with the facial vein through the __

A

Superior opthalmic vein

25
Q

Cavernous sinuses drain into the

A

Superior and inferior petrosal sinuses

26
Q

Aggregations of arachnoid villi which absorb CSF

A

Arachnoid granulations

27
Q

__ are expansions of subarachnoid space, formed in situations where the arachnoid and pia mater are widely separated

A

Subarachnoid cisterns

28
Q

The two-fold layer of pia mater

A

Tela Choroidea

29
Q

Choroid plexus is the fusion of the

A

Tela choroidea and ependyma

30
Q

These are invaginations of the pia mater due to small and medium arteries penetrating the brain parenchyma

A

Perivascular or Virchow Robin Space

31
Q

Connects the 3rd ventricle to the 4th ventricle

A

Cerebral aqueduct of sylvius

32
Q

__ allows communication between the fourth ventricle and the subarachnoid space

A

Foramen Magendie and Luschka

33
Q

Normal volume of CSF

A

150 ml

34
Q

Rate of production of CSF

A

0.5 mL per minute

35
Q

Turnover time of CSF

A

5 hours

36
Q

Flow of CSF

A

produced by choroid plexus–>interventricular foramina of monro–>3rd ventricle–>cerebral aqueduct of sylvius–>4th ventricle–> foramina of magendia and luschka–> subarachnoid spaces–>absorbed by arachnoid granulations

37
Q

brain barrier that separates ECF around the neurons and neuroglia from lumen of the capillary

A

Blood brain barier

38
Q

Endothelial cells of the capillary of BBB contain __

A

tight junctions

39
Q

Areas without BBB

A

Pineal body
Neurohypophysis
Area postrema
Hypothalamus

40
Q

Endothelial cells of blood-csf barrier contain __ instead of tight junctions

A

fenestrations

41
Q

Type of hydrocephalus characterized by raised pressure of the CSF; give etiology

A

Non-communicating; blockage at some point within the flow of the CSF

42
Q

Type of hydrocephalus where the CSF freely reaches the subarachnoid space

A

Communicating hydrocephalus

ANATOMY (33 decks)

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