Blood Supply of the CNS and CSF

Question 1

What is the process that keeps blood flow in the CNS constant?

Answer 1

Autoregulation

Question 2

Exchange through capillaries of the central nervous system is regulated by what?

Answer 2

Endothelial transport mechanisms

Question 3

What does the anterior choroidal artery supply?

Answer 3

Optic tract and parts of the internal capsule

Question 4

The anterior cerebral artery give rise to what artery?

Answer 4

Heubner artery

Question 5

What does the Heubner artery supply?

Answer 5

Parts of the corpus striatum and anterior part of internal capsule

Question 6

What does the middle cerebral artery supply?

Answer 6

Lateral surface of the frontal, parietal and temporal lobes

Question 7

What supplies the geniculocalcarine tract?

Answer 7

Middle cerebral artery

Question 8

What is the spinal cord supplied by?

Answer 8

Branches of the vertebral and radicular arteries

Question 9

What is the largest branch of the vertebral artery?

Answer 9

Posterior inferior cerebellar artery

Question 10

What supplies the lateral part of the medulla and much of the cerebellum?

Answer 10

Posterior inferior cerebellar artery

Question 11

What are branches of the basilar artery?

Answer 11

Anterior inferior and superior cerebellar arteries

Question 12

What artery has smaller branches that supply the pons and the labyrinth of the inner ear?

Answer 12

Basilar artery

Question 13

What artery gives rise to the posterior choroidal artery?

Answer 13

Posterior cerebral artery

Question 14

What connects to the posterior communicating artery?

Answer 14

Posterior cerebral artery

Question 15

What supplies the internal structures of the cerebral hemispheres and diencephalon?

Answer 15

Central arteries

Question 16

Aneurysms at sites of arterial bifurcation in and near the circle of Willis are common sources of?

Answer 16

Subarachnoid hemorrhage

Question 17

Where do the superior cerebral veins drain into?

Answer 17

Superior saggiata sinus

Question 18

Blood from the inferior surface of the brain is collected by?

Answer 18

Great cerebral vein

Question 19

Where does the great cerebral vein drain into?

Answer 19

Straight sinus

Question 20

The internal carotid artery is a terminal branch of?

Answer 20

Common carotid artery

Question 21

What artery enters the middle cranial fossa?

Answer 21

Internal carotid artery

Question 22

What space does the internal carotid artery enter?

Answer 22

Subarachnoid space

Question 23

What are the four groups of central arteries?

Answer 23

Anteromedial group, Anterolateral group, Posterolateral group, Posteromedial group

Question 24

What are the arteries of the anterolateral group referred to as?

Answer 24

Lenticulostriate or lateral striate arteries

Question 25

What is the name of the medial striate artery?

Answer 25

Artery of Heubner

Question 26

What is the origin of the anteromedial group?

Answer 26

Anterior cerebral and anterior communicating arteries

Question 27

What does the anteromedial group supply?

Answer 27

Anterior hypothalamus and preoptic area

Question 28

What is the origin of the anterolateral group?

Answer 28

Middle cerebral artery

Question 29

What does the anterolateral group supply?

Answer 29

Head of caudate nucleus, putamen, internal capsule and lateral hypothalamus

Question 30

What is the origin of the posteromedial group?

Answer 30

Posterior cerebral and posterior communicating arteries

Question 31

What does the posteromedial group supply?

Answer 31

Thalamus and hypothalamus

Question 32

What is the origin of the posterolateral group?

Answer 32

Posterior cerebral artery lateral to midbrain

Question 33

What does the posterolateral group supply?

Answer 33

Thalamus and midbrain

Question 34

What are the three arteries that supply the cerebellum?

Answer 34

Posterior inferior cerebellar artery, Anterior inferior cerebellar artery and superior cerebellar artery

Question 35

What arteries come from the vertebral arteries?

Answer 35

Posterior inferior cerebellar artery

Question 36

What arteries come from the basilar artery?

Answer 36

Anterior inferior cerebellar artery and Superior cerebellar artery

Question 37

What supplies the midbrian?

Answer 37

Branches from the termination of the basilar artery and initial segment of the posterior cerebral artery

Question 38

What supplies the pons?

Answer 38

Pontine arteries

Question 39

What supplies the medulla?

Answer 39

Branches from anterior inferior cerebellar artery and posterior inferior cerebellar artery

Question 40

What branches supply the choroid plexus of the 4th ventricle?

Answer 40

Anterior inferior cerebellar artery and posterior inferior cerebellar artery

Question 41

What supplies the choroid plexus of the lateral and 3rd ventricles?

Answer 41

One anterior and two posterior choroidal arteries on each side

Question 42

Where does the dural venous sinuses drain into?

Answer 42

Internal jugular vein

Question 43

Where do superficial veins run in to?

Answer 43

Subarachnoid space

Question 44

What veins travel in the transverse fissure?

Answer 44

Great cerebral vein and terminal part of internal cerebral vein

Question 45

What are the three layers of meninges?

Answer 45

Dura mater, Arachnoid mater and Pia mater

Question 46

What is the dura mater?

Answer 46

Outer tough layer of connective tissue

Question 47

What is the arachnoid mater?

Answer 47

Thin layer apposed to the dura mater

Question 48

What is the pia mater?

Answer 48

Very thin inner layer apposed to the surface of the brain

Question 49

A layer of pia mater accompanies arteries penetrating into?

Answer 49

The brain

Question 50

What connects the arachnoid mater and pia mater?

Answer 50

Wispy cords of connective tissue

Question 51

What is the cerebrospinal-spinal fluid secreted by?

Answer 51

Specialised cells within the ventricular system of the brain

Question 52

What does the CSF circulate around?

Answer 52

The brain and spinal cord

Question 53

What is the path of the CSF fluid being circulated?

Answer 53

From the 4th ventricles to the subarachnoid space

Question 54

Where is the CSF reabsorbed?

Answer 54

Dural venous sinuses

Question 55

What structures allow CSF to be reabsorbed into the sinuses?

Answer 55

Arachnoid granulations

Question 56

What is the function of CSF?

Answer 56

Cushions the brain both internal and externally

Question 57

What does the choroid plexus in ventricles produce?

Answer 57

CSF

Question 58

What are the spaces called when the arachnoid departs from the pia where CSF fills?

Answer 58

Cisterns

Question 59

Where does the subarachnoid space end?

Answer 59

Level of S2

Question 60

Where does the spinal cord end?

Answer 60

Level of L2