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MD2S3: Anatomy 203 > Dural Venous Sinuses > Flashcards

Dural Venous Sinuses Flashcards

1
Q

What are Dural Venous Sinuses?

A

Wide venous channels between the Periosteal and Meningeal Dural Layers

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2
Q

Which Dural Venous Sinuses do not lie in the Periosteal and Meningeal Dura Layers?

A

Inferior Sagittal Sinus
Straight Sinus

These sinuses lie in the dura

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3
Q

Dural Venous Sinuses are lined by …

A

endothelium

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4
Q

Dural Venous Sinuses are supported by …

A

2 dural layers

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5
Q

Characteristics of Dural Venous Sinuses

A

No Muscle Tissue in their walls
No Valves

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6
Q

How do Dural Venous Sinuses communicate with veins outside the skull?

A

Valveless Emissary Veins

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7
Q

What areas of the body do the Dural Venous Sinuses drain?

A

Bones of Skull
Meninges
CSF
Brain

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8
Q

Dural Venous Sinuses drain into …

A

Inferior Jugular Vein

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9
Q

Categories of Dural Venous Sinuses

A

Single
Paired

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10
Q

Names of Single Dural Sinuses

A

Superior Sagittal Sinus
Inferior Sagittal Sinus
Straight Sinus
Occipital Sinus
Basillar Venous Plexus
Intercavernous Sinuses

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11
Q

Single Dural Sinus: Superior Sagittal Sinus
Begins near …

A

Crista Galli

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12
Q

Single Dural Sinus: Superior Sagittal Sinus
Pathway

A

Runs backwards in Superior Border of Falx Cerebri

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13
Q

Single Dural Sinus: Superior Sagittal Sinus
Termination

A

Forms Right Transverse Sinus near Internal Occipital Protuberance

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14
Q

Single Dural Sinus: Superior Sagittal Sinus
Cross-sectional view of sinus is …

A

triangular

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15
Q

Single Dural Sinus: Superior Sagittal Sinus
Communicates with …

A

Arachnoid Granulations

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16
Q

Single Dural Sinus: Superior Sagittal Sinus
What are Arachnoid Granulations?

A

Protrusions of Arachnoid through Dura

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17
Q

Single Dural Sinus: Superior Sagittal Sinus
Tributeries

A

Superior Cerebral Veins

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18
Q

Single Dural Sinus: Inferior Sagittal Sinus
Location

A

Lower border of Falx Cerebri

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19
Q

Single Dural Sinus: Inferior Sagittal Sinus
Joins the …

A

Great Cerebral Vein
Straight Sinus

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20
Q

Single Dural Sinus: Straight Sinus
Lies in the junction between the ____ and ____

A

__Falx Cerebri__
__Tentorium Cerebelli__

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21
Q

Single Dural Sinus: Straight Sinus
What does the Straight Sinus become?

A

Deviates leftwards forming Left Transverse Sinus

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22
Q

Single Dural Sinus: Occipital Sinus
Location

A

Attached border of Falx Cerebelli

23
Q

Single Dural Sinus: Occipital Sinus
Joins to the …

A

Transverse Sinus above
Sigmoid Sinus below

24
Q

Single Dural Sinus: Basilar Venous Plexus
Location

A

Lies on the Clivus between 2 Dural Layers

25
Q

Single Dural Sinus: Basilar Venous Plexus
Connects …

A

2 Inferior Petrosal Venous Sinuses

26
Q

Single Dural Sinus: Basilar Venous Plexus
Receives veins from …

A

pons and medulla

27
Q

Single Dural Sinus: Basilar Venous Plexus
What happens in case of Thrombosis?

A

Death

28
Q

Single Dural Sinus: Intercavernous Sinuses
What are the groups?

A

Anterior
Posterior

29
Q

Single Dural Sinus: Intercavernous Sinuses
Location

A

Anterior and Posterior Borders of Diaphragma Sellae

30
Q

Names of Paired Dural Sinuses

A

Sphenoparietal Sinuses
Cavernous Sinuses
Superior Petrosal Sinus
Inferior Petrosal Sinus
Transverse Sinuses
Sigmoid Sinuses

31
Q

Paired Dural Sinuses: Sphenoparietal Sinuses
Location

A

Posterior Border of Lesser Wing of Sphenoid

32
Q

Paired Dural Sinuses: Sphenoparietal Sinuses
Ends by joining the …

A

Cavernous Sinus

33
Q

Paired Dural Sinuses: Cavernous Sinuses
Location

A

Side of body of Sphenoid Bone

34
Q

Paired Dural Sinuses: Cavernous Sinuses
Structures transverse to cavernous sinus

A

Inferomedial Wall
Lateral Wall

35
Q

Paired Dural Sinuses: Cavernous Sinuses
Structures of Inferomedial Wall

A

Internal Carotid Artery
Abducent Nerve

36
Q

Paired Dural Sinuses: Cavernous Sinuses
Structures of Lateral Wall

A

Up to Down:
Oculomotor Nerve
Trochlear Nerve
Opthalmic and maxillary divisions of trigeminal nerve

37
Q

Paired Dural Sinuses: Cavernous Sinuses
Anterior Tributaries

A

Superior Opthalmic Vein: Connects Cavernous Sinus to Facial Vein
Sphenoparietal Venous Sinus

38
Q

Paired Dural Sinuses: Cavernous Sinuses
Posterior Tributaries

A

Superior Petrosal Sinus: To Transverse Sinus
Inferior Petrosal Sinus: To IJV

39
Q

Paired Dural Sinuses: Cavernous Sinuses
Medial Connections

A

Intercavernous Sinuses

40
Q

Paired Dural Sinuses: Cavernous Sinuses
Face Infection

A

Transmitted through Superior Ophthalmic Vein
Leads to thrombosis of Cavernous Sinus

41
Q

Paired Dural Sinuses: Superior Petrosal Sinus
Location

A

Attached border of Tentorium Cerebelli along superior border of Petrous Temporal Bone

42
Q

Paired Dural Sinuses: Superior Petrosal Sinus
Drains blood from the ____ to the ____

A

__Cavernous Sinus__
__Transverse Sinus__

43
Q

Paired Dural Sinuses: Inferior Petrosal Sinus
Location

A

Between Petrous Temporal and Basilar Occipital bones

44
Q

Paired Dural Sinuses: Inferior Petrosal Sinus
Function

A

Drains blood from Cavernous Sinus to Internal Jugular Vein

45
Q

Paired Dural Sinuses: Transverse Sinus
Location

A

Transverse Sulcus (between the 2 layers of the attached margin of Tentorium Cerebelli)

46
Q

Paired Dural SInuses: Transverse Sinus
Right sinus is ____ because it is continuous with the ____

A

__larger__
__superior sagittal sinus__

47
Q

Paired Dural Sinuses: Transverse Sinus
Left sinus is continuous with the …

A

straight sinus

48
Q

Paired Dural Sinuses: Sigmoid Sinuses
Shape

A

S-shaped

49
Q

Paired Dural Sinuses: Sigmoid Sinuses
Continuation of …

A

transverse sinus

50
Q

Paired Dural Sinuses: Sigmoid Sinuses
Descends close to the …

A

mastoid air sinus

51
Q

Paired Dural Sinuses: Sigmoid Sinuses
Infections of Sigmoid Sinuses

A

Otitis Media
Mastoiditis

52
Q

Paired Dural Sinuses: Sigmoid Sinuses
Infections causes …

A

sigmoid sinus thrombosis

53
Q

Which sinuses pass through the Jugular Venous Foramen?

A

Inferior Petrosal Sinus
Sigmoid Sinus

MD2S3: Anatomy 203 (31 decks)

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