CNS vasc

Question 2

Prior to terminating, however, each ICA gives off a .

Answer 2

posterior communicating artery

Question 3

posterior communicating arteries project posteriorly to communicate with the

Answer 3

posterior cerebral artery (PCA).

Question 4

two ant cerebral art are connected by an anastomosing branch called the

Answer 4

anterior communicating artery.

Question 5

not part of circle of willis

Answer 5

middle cerebral artery

Question 6

hip and down provided by

Answer 6

Anterior cerebral artery (ACA)

Question 7

middle cerebral artery

Answer 7

supply rest of body other than LE

Question 9

lenticulostriate arteries

Answer 9

given off by middle cerebral arteries as they course lateral

Question 10

frequent site of stroke

Answer 10

lenticulostriate arteries

Question 11

internal capsule and deep gray matter

Answer 11

lenticulostriate arteries

Question 12

formed by tight junctions between the endothelial cells lining CNS capillaries

Answer 12

Blood Brain Barrier

Question 13

limit the flow of substances from capillaries into the CNS

Answer 13

tight junctions of Blood brain barrier

Question 14

hydrophilic substances such as amino acids and glucose and medications

Answer 14

cant cross bbb alone

need carrier

Question 15

Lipid soluble molecules, such as ethanol, nicotine and caffeine

Answer 15

cross the BBB,

Question 16

Intermediate meningeal layer

Answer 16

Arachnoid

Question 17

Conforms to shape of brain …

does not dip into sulci

Delicate membrane

Answer 17

Arachnoid

Question 18

Pia mater

Answer 18

Adheres to the brain, following all of its contours

Question 19

Dura mater

Answer 19

External Periosteal Layer

Internal Meningeal Layer

Question 20

Internal Meningeal Layer of dura mater

Answer 20

Dense fibrous connective tissue

Question 21

External Periosteal Layer

Answer 21

Formed by the periosteum which adheres to the internal surface of skull

Question 22

two largest dural reflections are

Answer 22

Falx cerebri

©Tentorium cerebelli

Question 23

invaginates along the longitudinal fissure, between the two cerebral hemispheres

Answer 23

Falx cerebri

Question 24

positioned between the occipital and temporal lobes - and- cerebellum

Answer 24

Tentorium cerebelli:

Question 27

dural venous sinuses

Answer 27

Dural reflections receive deoxygenated blood

Question 28

conveys deoxygenated blood from cerebral veins to the internal jugular vein

Answer 28

dural venous sinus system

Question 29

arrange venous sinuses --\> cerebral arteries capillaries --\>internal jugular vein--\> cerebral veins

Answer 29

cerebral arteries capillaries --\> cerebral veins --\> venous sinuses --\> internal jugular vein

Question 30

diff b/n Cerebral veins and dural venous sinuses

Answer 30

typical venous histology vs. dural spaces lined with endothelial cells

Question 31

Potential space between cranium & periosteal layer of dura

Answer 31

Epidural space

Question 32

Epidural hemorrhage/ hematoma

Answer 32

Most frequently occurs with trauma/skull fracture

Question 33

Epidural hemorrhage/ hematoma

Answer 33

Laceration/ tearing of the meningeal artery and Bleeding into the potential space between the cranium and periosteal layer of dura

Question 34

the periosteal dura encloses the

Answer 34

meningeal vessels.

Question 35

subdural space

Answer 35

Potential space between the dura and arachnoid

Question 36

Subdural Hemorrhage/ Hematoma

Answer 36

secondary to rapid acceleration/deceleration which pulls the brain away from the skull

Question 37

tears cerebral veins as they enter the dural sinus

Answer 37

Subdural Hemorrhage/ Hematoma

Question 38

subarachnoid space

Answer 38

true space that contains blood vessels and CSF

Question 39

Interventricular Foramen (Foramen of Monroe)

Answer 39

communicates Lateral Ventricles (2) Right Left to 3rd ventricle

Question 40

communication between 3rd and 4th ventricle

Answer 40

Cerebral Aqueduct (Aqueduct of Sylvius)

Question 41

Subarachnoid Hemorrhage/ Hematoma

Answer 41

arterial hemorrhage

Question 42

Subarachnoid Hemorrhage/ Hematoma

Answer 42

~70% are 2° aneurysm

Question 45

Foramen of Magendie

Answer 45

Midline opening in the 4th ventricle

Question 46

Foramen of Luschka

Answer 46

Paired openings in the 4th ventricle

Question 47

CSF is made in the ------ -------, it circulates through the --------- and exits the ---- ventricle

Answer 47

CSF is made in the choroid plexus, it circulates through the ventricles and exits the 4th ventricle

Question 48

As CSF leaves the 4th ventricle, it enters the

Answer 48

subarachnoid space.

Question 49

CSF travel to subarachnoid space into the dural venous sinuses

Answer 49

via arachnoid granulations