Dural Venous Sinuses

Question 1

What does scalp stand for?

Answer 1

Skin
Connective tissue
Adipose tissue
Loose areolar connective tissue
Pericranium

Question 2

The dura has what 2 structure within in?

Answer 2

Flax cerebri
Tentorium cerebelli

Question 3

The meninges form what three spaces?

Answer 3

Epidural space
Subarachnoid space
Subdural space

Question 4

Epidural Space

Answer 4

Potential space. Located between the inner surface of the skull and the tightly adherent dura

Question 5

Subarachnoid Space

Answer 5

Natural space. Located between the arachnoid and pia mater, this space contains CFS and major arteries of the brain

Question 6

Subdural Space

Answer 6

Potential space. Located between the meningeal layer of the dura and loosely adherent arachnoid

Question 7

Bridging Veins

Answer 7

Drain cerebral hemispheres and passes through the subdural space en route to several large dural venous sinuses

Question 8

Dural Venous Sinuses

Answer 8

Large valveless venous channels that drain venous blood from the cranial cavity. Channels lie enclosed within the two layers of the dura. They do not run parallel with arteries

Question 9

What are the 2 layers of the dura?

Answer 9

Periosteal dura
Meningeal dura

Question 10

What are the 7 major dural sinuses in the cranial cavity?

Answer 10

Superior sagittal sinus
Inferior sagittal sinus
Straight sinus
Transverse sinus
Sigmoid sinus
Cavernous sinus
Superior petrosal

Question 11

Function of Dural Sinuses

Answer 11

Maintain systemic circulation by collectively returning deoxygenated blood from the cranial vault

Question 12

Where does the venous blood travel from to dural venous sinuses

Answer 12

Cerebral and cerebellar veins
Emissary veins
Diploic veins
Meningeal veins
Arachnoid granulations

Question 13

Cerebral and Cerebellar Veins

Answer 13

Cross the subdural space to drain into the superior sagittal vein ‘bridging veins’

Question 14

Emissary Veins

Answer 14

Venous structures that allow communication between intracranial and extra cranial vessels

Question 15

Diploic Veins

Answer 15

Intraosseous venous vessels which drain blood between the inner and outer layer flat bones of the skull

Question 16

Dipole

Answer 16

The spongy cancellous bone separating the inner and outer layers of the cortical bone of the skull

Question 17

Meningeal Veins

Answer 17

Collect blood from the meninges

Question 18

Arachnoid Granulations

Answer 18

For CFS returning to the venous circulation

Question 19

CFS Flow

Answer 19

Lateral ventricles
Interventricular foramen of monro
Third ventricle
Cerebral aquaduct
Fourth ventricle
Subarachnoid space
Medial foramen of Magendle / Lateral foramen of Luscka
Cisterna magna

Question 20

Superior Sagittal Sinus Location

Answer 20

Resides in the base of the falx cerebri and runs from the foramen cecum to the occipital protuberance

Question 21

Superior Sagittal Sinus Function

Answer 21

The main location for CFS return after passing through arachnoid granulations

Question 22

Inferior Sagittal Sinus Location

Answer 22

In the inferior, free margin of the falx cerebri

Question 23

Inferior Sagittal Sinus Function

Answer 23

Collects blood from the Falx and medial surfaces of the brain hemispheres; drains into the straight sinus

Question 24

Straight Sinus Location

Answer 24

Lies within the posterior end of the falx cerebri and in the middle of the tentorium cerebelli

Question 25

Straight Sinus Function

Answer 25

Drains the cerebellum, thalamus, and basal ganglia and terminates into the confluences of sinuses

Question 26

Confluence of Sinuses

Answer 26

Located at the occipital pole of the skull and is the site of union for the following: Superior sagittal sinus Straight sinus Occipital sinus Transverse sinus

Question 27

Transverse Sinus

Answer 27

Paired left and right. Drains the blood from the veins of the cerebellum and inferior surface of the brain, via the confluence of sinus. Blood is then delivered to the sigmoid sinus

Question 28

Sigmoid Sinus

Answer 28

Paired dural sinus. Continuous with the transverse sinus, becomes sigmoid sinus after the tentorium cerebelli ends. Drains into the internal jugular vein

Question 29

Cavernous Sinus

Answer 29

Drains most of the anterior inferior surface of the brain. Located on either side of the sella turcica and body of the sphenoid bone

Question 30

Contents of the Cavernous Sinus

Answer 30

Occulomotor nerve Trochlear nerve Adbucens nerve Trigeminal V1 and V2 Internal carotid artery

Question 31

What can cause Cavernous Sinus Syndrome?

Answer 31

Mass effect from tumor Infection Thrombus

Question 32

Superior Petrosal Sinus Location

Answer 32

Runs along the petrous part of the temporal bone in the base of the tentorium cerebelli and terminates in the sigmoid sinus

Question 33

Superior Petrosal Sinus Function

Answer 33

Drain the venous blood from the brainstem, temporal lobe of the cerebrum, cerebellum, middle and inner ear into the transverse sinus