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NEUROANATOMY S01 > Meningeal and Dural Venous Sinuses > Flashcards

Meningeal and Dural Venous Sinuses Flashcards

1
Q

2 layers of the Dura Mater of the brain

A

Endosteal and Meningeal layers

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2
Q

On certain areas, the closely united layers of the dura mater separate to form __________

A

Venous Sinuses

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3
Q

This layer of the dura mater is the periosteum covering the inner surface of the skull

A

Endosteal layer

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4
Q

At the level of the ________ the outer layer of the dura mater does not become continuous with the dura of the SC

A

Foramen magnum

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5
Q

This inner layer is the dura mater proper

A

Meningeal layer of the dura mater

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6
Q

This is a dense, strong fibrous membrane covering the brain and is continuous through the foramen magnum with the dura mater of the spinal cord.

A

Meningeal layer of the dura mater

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7
Q

What are the four septa of the meningeal layer of the dura mater that divide the cranial cavity into freely communicating spaces that lodge the subdivisions of the brain.

A

Tentorium cerebelli
Falx cerebri
Falx cerebelli
Diaphragma sellae

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8
Q

These function to restrict the displacement of the brain associated with acceleration and deceleration when the head is moved.

A

Septa of the meningeal layer of the dura mater

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9
Q

This is a sickle-shaped fold of dura mater that lies in the midline between the two cerebral hemispheres.

A

Falx Cerebri

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10
Q

is a crescent-shaped fold of dura mater that roofs over the posterior cranial fossa.

A

Tentorium cerebelli

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11
Q

Which lobe of the cerebral hemisphere does the tentorium cerebelli support

A

Occipital lobes

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12
Q

This is a gap of the anterior edge of the tentorium cerebelli that allows passage of the midbrain, which produces an inner free border and an outer fixed border

A

Tentorial notch

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13
Q

This is a small, sickle-shaped fold of dura mater attached to the internal occipital crest projects forward between the two cerebellar hemispheres.

A

Falx cerebelli

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14
Q

This is a small, circular fold of dura mater that forms the roof for the sella turcica.

A

Diaphragma sellae

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15
Q

The opening of this septa allows passage of the stalk of the pituitary gland

A

Diaphragma sellae

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16
Q

What are the innervations of the Dura Mater?

A 
Trigeminal Nerve (V1, V2, V3)
Vagus Nerve (X)
Cervical Spinal Nerves (C1-C3)
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17
Q

Give the meningeal septa and cranial fossa innervated by V1

A

Falx cerebri
Tentorium cerebelli
Anterior Cranial Fossa

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18
Q

What innervates the Middle and Posterior Cranial fossa

A

Middle - V2 and V3

Posterior - Vagus and C1-C3 spinal nerves

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19
Q

Arteries supplying the Dura Mater

A 
Middle Meningeal Artery
Occipital Artery
Vertebral Artery
Internal Carotid Artery
ascending Pharyngeal Artery
Maxillary Artery
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20
Q

Most clinically important blood supply of the dura mater

A

Middle meningeal artery

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21
Q

The middle meningeal artery arises from the _______ artery in the _______ fossa.

A

maxillary

infratemporal

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22
Q

The middle meningeal artery runs forward and laterally in a groove on the upper surface of the squamous part of the ______ bone.

A

Temporal

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23
Q

The main function of these structures is to receive blood from the brain through the cerebral veins and the cerebrospinal fluid (CSF) from the subarachnoid space

A

Venous Sinuses

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24
Q

The venous sinus receive blood and CSF through which structures?

A

Arachnoid villi

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25
Q

What venous sinus occupies the upper fixed border of the falx cerebri?

A

Superior sagittal sinus

26
Q

The venous sinus on the upper part of the falx cerebri begins anteriorly at which foramen?

A

Foramen cecum

27
Q

The venous sinus on the upper part of the falx cerebri runs posteriorly to which bony landmark of the posterior cranial fossa?

A

Internal occipital protuberance

28
Q

The venous sinus on the upper part of the falx cerebri runs posteriorly to which bony landmark of the posterior cranial fossa?

A

Internal occipital protuberance

29
Q

What do you call the dilation formed by the superior sagittal sinus at the posterior cranial fossa?

A

Confluence of the sinuses

30
Q 
The superior sagittal sinus usually becomes continuous with which of the following sinuses?
A. right transverse sinus
B. left transverse sinus
C. occipital sinus
D. straight sinus
A

A. Right Transverse Sinus

Superior is Right👍👍👍

31
Q 
Which of the following sinuses is usually the continuation of the straight sinus?
A. left transverse sinus
B. right transverse sinus
C. left sphenoparietal sinus
D. confluence of the sinuses
A

A - Left Transverse Sinus

Straight to the Left! ♫ Every thing you own in the box to the left ♫

32
Q

What do you call the venous sinus occupying the free lower border of the falx cerebri?

A

Inferior sagittal sinus

33
Q

This vein is located at the free margin of the tentorium cerebelli

A

Great vein of Galen

34
Q

Which sinus and vein joins at the free margin of the tentorium cerebelli

A

Inferior sagittal sinus and the Great vein of Galen

35
Q

Which sinus occupies the line of junction of the falx cerebri with the tentorium cerebelli?

A

Straight sinus

36
Q

Which sinus is formed by the union of the inferior sagittal sinus with the great cerebral vein?

A

Straight sinus

37
Q

Which sinuses occupies the attached margin of the tentorium cerebelli?

A

Transverse sinuses

38
Q

Which sinuses are direct continuation of the transverse sinuses?

A

Sigmoid sinuses

39
Q

The sigmoid sinus passes through which cranial foramen?

A

Jugular (posterior part)

40
Q

The sigmoid sinus passes through which cranial foramen?

A

Jugular (posterior part) foramen

41
Q

The sigmoid sinus becomes continuous with which structure (specific part)?

A

Superior bulb of the internal jugular vein

42
Q

To which dural meningeal septum (margin) does the small occipital sinus occupies?

A

Falx cerebelli

43
Q

It commences near the foramen magnum where it communicates with the vertebral veins and drains into the confluence of the sinuses.

A

Occipital sinus

44
Q

The cavernous sinuses are situated on each side of the body of the _______ bone.

A

sphenoid

45
Q

Which cranial nerve passes through the Cavernous sinus?

A

Abducens nerve

CAVducens Nerve

46
Q

Which cranial nerves run forward in the lateral wall of the cavernous sinus?

A

III, IV, V1, V2

47
Q

Which artery runs forward through the cavernous sinus?

A

Internal carotid artery

48
Q

What structure surrounds the artery that passes through the cavernous sinus?

A

Sympathetic nerve plexus

48
Q

What structure surrounds the artery that passes through the cavernous sinus?

A

Sympathetic nerve plexus

49
Q

Is the arachnoid mater an impermeable membrane covering of the brain? (yes/no)

A

YES

50
Q

This potential space filled with a film of fluid separates the arachnoid mater from the dura mater

A

Subdural space

51
Q

The subarachnoid space between the pia mater and arachnoid mater is filled with _____

A

Cerebrospinal fluid

52
Q

These sites, formed as the arachnoid mater projects into the dural venous sinuses, are where the CSF diffuses into the bloodstream.

A

Arachnoid villi

53
Q

The arachnoid mater is connected to the pia mater by delicate strands of ________ tissue.

A

fibrous

54
Q

All the cerebral arteries and veins lie in the ______ space, as do the cranial nerves.

A

subarachnoid

55
Q

The arachnoid mater fuses with the ________ of the cranial nerves at their point of exit from the skull.

A

epineurium

56
Q

The pia mater is an avascular membrane that closely invests the brain, covering the gyri and descending into the deepest sulci. (YES/NO)

A

NO (pia mater is vascular)

56
Q

The pia mater is an avascular membrane that closely invests the brain, covering the gyri and descending into the deepest sulci. (YES/NO)

A

NO (pia mater is avascular)

57
Q

This is a dense, strong, fibrous membrane that encloses the spinal cord and the cauda equina.

A

The dura mater

58
Q

The dura mater ends on the dural structure known as ________ that proceeds downward from the apex of the conus medullaris

A

Filum terminale

59
Q

The dura mater ends at what level of the spinal cord

A

Lower border of the second vertebra (lower S2)

60
Q

The pia mater is thickened on either side between the nerve roots to form the __________, which passes laterally to adhere to the arachnoid and dura mater.

A

Denticulate ligament

NEUROANATOMY S01 (6 decks)

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