Meninges and Ventricles

Question 1

Meninges (3 parts)

Answer 1

Dura, Arachnoid, Pia

Question 2

Large arteries and veins travel in the ________.

Answer 2

Sub arachnoid space

Question 3

Arachnoid granulations

Answer 3

Outmatching of arachnoid into the sagital sinus

Question 4

Skull fractures can tear the ________ artery, resulting in epidural hemorrhage.

Answer 4

Middle meningeal artery

Question 5

Epidural hemorrhage

Answer 5

Hemorrhage above the dura

Question 6

If bridging veins are torn they cause _____. Bridging beings empty into the _______.

Answer 6

subdural hemorrhage,

dural sinuses

Question 7

Subarachnoid cisterns are larger collections of _____ in the subarachnoid space.

Answer 7

CSF

Question 8

Function of Meninges

Answer 8

• protection
• stabilization (partial flotation, mechanical suspension)
• arachnoid barrier (part of the blood-CSF barrier)

Question 9

Two dural reflections

Answer 9

Tentorium cerebellum, falx cerebri

Question 10

Fall cerebri

Answer 10

Divides the hemispheres into right and left compartments

Question 11

Tentorium cerebellum

Answer 11

Keeps the cerebellum from the cerebral hemispheres

Question 12

There is a notch in the tent where the _______ comes out.

Answer 12

Brain stem

Question 13

The superficial cerebral veins drain into the ________.

Answer 13

Venous sinuses

Question 14

Where the falx joins the tent is the _______ sinus.

Answer 14

Straight

Question 15

The _________ cerebral vein empties into the straight sinus.

Answer 15

Great

Question 16

Dural venous sinuses are endothelial lined channels that carry venous blood to the ______ vein.

Answer 16

Jugular

Question 17

CNS lymphatic vessels run adjacent to the dural sinuses and drain into _________.

Answer 17

cervical lymph nodes

Question 18

CSF is made in the ________.

Answer 18

Choroid plexus

Question 19

Choroid plexus has _____ capillaries.

Answer 19

Fenestrated

Question 20

Congenital aqueduct stenosis can cause ________.

Answer 20

Hydrocephalus, causes infants heads to enlarge because the sutures are not there yet, they need a shunt put in

Question 21

Hydrocephalous ex vacuo

Answer 21

Hydrocephalous caused by atrophy, such as alzheimers disease, something needs to take up the space so the CSF will fill it up

Question 22

Non-communicating hydrocephalous

Answer 22

The obstruction is someplace within the ventricles (up to and including apertures of the fourth ventricle)

Question 23

Communicating hydrocephalous

Answer 23

Obstruction after the CSF exits the ventricles i.e. blockade of arachnoid villi

Question 24

3 areas that herniate:

Answer 24

1. cingulate gyrus
2. uncut
3. cerebellar tonsils

Question 25

There is an opening in the falx and if there is a lot of pressure, the _______ gyrus can herniate underneath it.

Answer 25

Cingulate

Question 26

Cranial nerve III and the ______ ____ artery are adjacent to the uncus.

Answer 26

Posterior cerebral artery

Question 27

Uncle herniation squeezes out under the _____ and compresses the midbrain.

Answer 27

tentorium

Question 28

Tonsils herniation typical presents as _______.

Answer 28

Unilateral dilation of the pupils.