(E1) 6 - Meninges and Dural Sinuses

Question 1

Function of the Meninges

Answer 1

Question 2

What are the potential spaces in the brain?

Answer 2

Epidural and subdural

(Not normally there but could be there when bleeding possibly)

Question 3

What are the actual spaces in the brain?

Answer 3

Subarachnoid

Question 4

What are the 3 layers of meninges?

Answer 4

Dura Mater
Arachnoid Mater
Pia Mater

Question 5

What are the 2 layers that form the dura layer?

Answer 5

• Periosteal layer (tight to skull)
• Meningeal layer

Question 6

The dural septum between the cerebral hemisphere is called the _________

Answer 6

falx cerebri/cerebrum

Question 7

The dural septum between the cerebellar hemispheres is called the ____________

Answer 7

falx cerebelli

Question 8

What is the dural septa?

Answer 8

Question 9

Dural Septa: What does the diaphragm sellae do?

Answer 9

Covers sella turcica

Question 10

Dural Septa: Where is the falx cerebrum?

Answer 10

Between hemispheres

Question 11

The dural septum between the cerebrum and brainstem/cerebellum is called ____________

Answer 11

Tentorium cerebelli

Question 12

What does the superior sagittal sinus run through?

Answer 12

Falx cerebri

Question 13

What does the inferior sagittal sinus run through?

Answer 13

Falx cerebri

Question 14

What is the straight sinus made up of?

Answer 14

Junction of falx cerebri and tentorium

Question 15

What does the occipital sinus run through?

Answer 15

Falx cerebelli

Question 16

What dural sinuses are in the confluence of sinuses? (3)

Answer 16

R & L drain from it (not a part)

Question 17

What do the Right and Left transverse sinuses drain from?

Answer 17

Drain from the confluence

Question 18

What dural sinuses drain the anterior of the face?

Answer 18

Question 19

Before the Right transverse sinus drains into the internal jugular, it passes through the _________

Answer 19

Right sigmoid sinus

Question 20

What is the blood supply to the anterior cranial fossa?

Answer 20

Middle meningeal provides the majority of blood supply.

Question 21

What is the blood supply to the middle cranial fossa?

Answer 21

** Know middle meningeal

Question 22

What is the blood supply to the posterior cranial fossa?

Answer 22

Vertebral are very big here

Question 23

Sensory nerve supply to Anterior, Middle, and Posterior Cranial fossas

Answer 23

Question 24

Describe the Arachnoid Layer

Answer 24

Question 25

What is found in the subarachnoid space?

Answer 25

CSF and vessels

Question 26

Function of Arachnoid Villi

Answer 26

Question 27

Where do you find the Pia mater?

Answer 27

Tightly adheres to the brain tissue itself and follows the contours of the brain.

Question 28

Image: Spinal Meninges

Answer 28

Question 29

Where does the dura attach and extend?

Answer 29

Question 30

Where is the arachnoid mater and what does it contain?

Answer 30

Question 31

Where is the pia mater and what does it contain?

Answer 31

Question 32

What two layers contribute to making the film terminal?

Answer 32

Dura (exterum) Pia (interum)

Question 33

What layer is responsible for making the denticulate ligaments?

Answer 33

Pia

Question 34

Epidural hemorrhage is due to ________

Answer 34

Middle meningeal artery

Question 35

Subdural hemorrhage is due to _______

Answer 35

Leaking dural venous sinus

Question 36

Subarachnoid hemorrhage is due to __________

Answer 36

Cerebral artery or vein (aneurysm or trauma)

Question 37

Stroke is due to _________

Answer 37

Middle Cerebral Artery

Question 38

What 4 different things can lead to a hemorrhage?

Answer 38

Epidural bleed Subdural Leak Subarachnoid Bleed Stroke

Question 39

Potential treatment for a hematoma

Answer 39

Treatment can be craniotomy and evacuation

Question 40

Pressure created from a hematoma or a tumor can lead to ___________

Answer 40

Herniation

Question 41

What is a herniation in the brain?

Answer 41

Increasing Cranial Pressure

Question 42

Examples of Herniation (list 3)

Answer 42

Question 43

Image of Herniations

Question 44

How bad is a herniation of the cerebellum into the foramen magnum?

Answer 44

Fatal - will not survive