Meningeal and Dural Venous Sinuses

Question 1

2 layers of the Dura Mater of the brain

Answer 1

Endosteal and Meningeal layers

Question 2

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

Answer 2

Venous Sinuses

Question 3

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

Answer 3

Endosteal layer

Question 4

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

Answer 4

Foramen magnum

Question 5

This inner layer is the dura mater proper

Answer 5

Meningeal layer of the dura mater

Question 6

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.

Answer 6

Meningeal layer of the dura mater

Question 7

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.

Answer 7

Tentorium cerebelli
Falx cerebri
Falx cerebelli
Diaphragma sellae

Question 8

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

Answer 8

Septa of the meningeal layer of the dura mater

Question 9

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

Answer 9

Falx Cerebri

Question 10

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

Answer 10

Tentorium cerebelli

Question 11

Which lobe of the cerebral hemisphere does the tentorium cerebelli support

Answer 11

Occipital lobes

Question 12

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

Answer 12

Tentorial notch

Question 13

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

Answer 13

Falx cerebelli

Question 14

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

Answer 14

Diaphragma sellae

Question 15

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

Answer 15

Diaphragma sellae

Question 16

What are the innervations of the Dura Mater?

Answer 16

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

Question 17

Give the meningeal septa and cranial fossa innervated by V1

Answer 17

Falx cerebri
Tentorium cerebelli
Anterior Cranial Fossa

Question 18

What innervates the Middle and Posterior Cranial fossa

Answer 18

Middle - V2 and V3

Posterior - Vagus and C1-C3 spinal nerves

Question 19

Arteries supplying the Dura Mater

Answer 19

Middle Meningeal Artery
Occipital Artery
Vertebral Artery
Internal Carotid Artery
ascending Pharyngeal Artery
Maxillary Artery

Question 20

Most clinically important blood supply of the dura mater

Answer 20

Middle meningeal artery

Question 21

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

Answer 21

maxillary

infratemporal

Question 22

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

Answer 22

Temporal

Question 23

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

Answer 23

Venous Sinuses

Question 24

The venous sinus receive blood and CSF through which structures?

Answer 24

Arachnoid villi

Question 25

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

Answer 25

Superior sagittal sinus

Question 26

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

Answer 26

Foramen cecum

Question 27

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

Answer 27

Internal occipital protuberance

Question 28

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

Answer 28

Internal occipital protuberance

Question 29

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

Answer 29

Confluence of the sinuses

Question 30

``` 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 ```

Answer 30

A. Right Transverse Sinus | Superior is Right👍👍👍

Question 31

``` 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 ```

Answer 31

A - Left Transverse Sinus | Straight to the Left! ♫ Every thing you own in the box to the left ♫

Question 32

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

Answer 32

Inferior sagittal sinus

Question 33

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

Answer 33

Great vein of Galen

Question 34

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

Answer 34

Inferior sagittal sinus and the Great vein of Galen

Question 35

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

Answer 35

Straight sinus

Question 36

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

Answer 36

Straight sinus

Question 37

Which sinuses occupies the attached margin of the tentorium cerebelli?

Answer 37

Transverse sinuses

Question 38

Which sinuses are direct continuation of the transverse sinuses?

Answer 38

Sigmoid sinuses

Question 39

The sigmoid sinus passes through which cranial foramen?

Answer 39

Jugular (posterior part)

Question 40

The sigmoid sinus passes through which cranial foramen?

Answer 40

Jugular (posterior part) foramen

Question 41

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

Answer 41

Superior bulb of the internal jugular vein

Question 42

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

Answer 42

Falx cerebelli

Question 43

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

Answer 43

Occipital sinus

Question 44

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

Answer 44

sphenoid

Question 45

Which cranial nerve passes through the Cavernous sinus?

Answer 45

Abducens nerve | CAVducens Nerve

Question 46

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

Answer 46

III, IV, V1, V2

Question 47

Which artery runs forward through the cavernous sinus?

Answer 47

Internal carotid artery

Question 48

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

Answer 48

Sympathetic nerve plexus

Question 48

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

Answer 48

Sympathetic nerve plexus

Question 49

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

Answer 49

YES

Question 50

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

Answer 50

Subdural space

Question 51

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

Answer 51

Cerebrospinal fluid

Question 52

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

Answer 52

Arachnoid villi

Question 53

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

Answer 53

fibrous

Question 54

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

Answer 54

subarachnoid

Question 55

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

Answer 55

epineurium

Question 56

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

Answer 56

NO (pia mater is vascular)

Question 56

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

Answer 56

NO (pia mater is avascular)

Question 57

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

Answer 57

The dura mater

Question 58

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

Answer 58

Filum terminale

Question 59

The dura mater ends at what level of the spinal cord

Answer 59

Lower border of the second vertebra (lower S2)

Question 60

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.

Answer 60

Denticulate ligament