Meninges

Question 1

The _____ are 3 membrane layers that protect the CNS.

Answer 1

meninges

Question 1

Three membranes that line the skull and vertebral canal, and enclose the brain and spinal cord:

Answer 1

meninges

Question 2

What are the 3 layers that constitute the meninges?

Answer 2

dura mater; arachnoid; pia mater

Question 3

This meninge layer is external and is attached to the bones of the skull:

Answer 3

dura mater

Question 4

This meninge layer has space for fluid and vessels:

Answer 4

arachnoid

Question 5

This meninge layer is thin and is related to the CNS and neurons:

Answer 5

pia mater

Question 6

The _____ space is only found in the vertebral canal.

Answer 6

epidural

Question 7

The _____ space is where spinal fluid runs through, located under the arachnoid space.

Answer 7

subarachnoid

Question 8

Arachnoid + pia mater = ?

Answer 8

leptomeninges

Question 9

The _____ space is external to the dura mater.

Answer 9

epidural

Question 10

The cranial dura is fused to the _____.

Answer 10

periosteum

Question 11

If there is space between the cranial dura and periosteum, it can be due to a:

Answer 11

hematoma

Question 12

Within the vertebral canal, the dura mater and periosteum are separated, leaving a _____-filled epidural space just deep to the yellow ligament.

Answer 12

fat

Question 13

A longitudinal fold of dura mater that lives between the hemispheres:

Answer 13

falx cerebri

Question 14

The falx cerebri contains the dorsal sagittal _____, which collects blood from the CNS.

Answer 14

sinus

Question 15

This specialized fold of the dura mater extends into the transverse cerebral fissure, between the cerebral hemispheres and cerebellum):

Answer 15

tentorium cerebelli

Question 16

Collects blood from the brain:

Answer 16

dorsal sagittal sinus

Question 17

“Spider-web” like structures of the arachnoid layer:

Answer 17

arachnoid trabeculae

Question 18

This layer is intimately attached to the surface of the CNS (barrier between CNS and vessels):

Answer 18

pia mater

Question 19

In the subarachnoid space, we have subarachnoid _____, which are enlargements that are useful for CSF collection.

Answer 19

cisterns

Question 20

The cerebellomedullary cistern (cisterna magna) and lumbar cistern are areas where we can collect:

Answer 20

CSF

Question 21

Thickened longitudinal cord of pia on lateral margin of spinal cord which segmentally attaches to the dura and arachnoid, and thus, suspends the spinal cord, as well as provides stability (preventing extra movement of the spinal cord):

Answer 21

denticulate ligaments

Question 22

Narrow cord of meninges that attaches conus medullaris to the caudal vertebrae:

Answer 22

filum terminale

Question 23

The _____ _____ forms spinal fluid.

Answer 23

choroid plexus

Question 24

What is being described by the following:
-compact mass of pia, capillaries, and ependymal epithelium
-produced CSF by secretion and ultrafiltration
-present within each ventricle

Answer 24

choroid plexus

Question 25

_____ epithelium covers the inside of ventricles.

Answer 25

ependymal

Question 26

CSF is the transparent fluid formed from the filtration of _____.

Answer 26

blood

Question 27

The _____ is the most rostral portion of the 4th ventricle.

Answer 27

pons

Question 28

The _____ is the most caudal portion of the 4th ventricle.

Answer 28

medulla oblongata

Question 29

Formations from arachnoid toward the dura mater sinus that drain fluid into the venous system:

Answer 29

arachnoid villi

Question 30

Caused by high pressure of CSF in arachnoid space b/c of poor circulation. Since the bones aren’t fully sealed, the fluid enters.

Answer 30

hydrocephalus