module 20 (done)

Question 1

what part of the brain does the internal carotid artery supply

Answer 1

supplies anterior 2/3 of brain

Question 2

vertebrobasilar artery supplying what part of brain

Answer 2

supplies posterior circulation of brain (vertebral artery turns into basilar artery) arrives from subclavian artery

Question 3

order of blood supply to brain top to bottom

Answer 3

anterior cerebral a., anterior communicating a., internal carotid a., middle cerebral a., posterior communicating a., posterior cerebral a., basilar, verterbral

Question 4

what artery supplies the lateral middle part of the brain

Answer 4

middle cerebral a.

Question 5

what artery supplies the medial upper portion of brain and the lower extremity part of the homunculus

Answer 5

anterior cerebral artery

Question 6

what artery supplies the back posterior portion of brain (occipital and inferior temporal lobe)

Answer 6

posterior cerebral artery

Question 7

telencephalon

Answer 7

cerebrum

Question 8

diencephalon

Answer 8

every thalamus

Question 9

mesencephalon

Answer 9

midbrain

Question 10

metencephalon

Answer 10

pons / cerebellum (where they met)

Question 11

myelencephalon

Answer 11

medulla oblongata (lots of myelenated axons)

Question 12

through which foramen do vertebral arteries enter the cranium

Answer 12

foramen magnum

Question 13

two vertebral arteries merge into which artery

Answer 13

basilar artery

Question 14

basilar artery divides into right and left…

Answer 14

posterior cerebral arteries

Question 15

where do posterior cerebral arteries supply

Answer 15

occipital lobes and inferior aspect of posterior temporal lobe

Question 16

right and left anterior cerebral arteries join together to form the

Answer 16

anterior communicating artery

Question 17

superior sagittal sinus

Answer 17

runs the groove of the medial longitudinal fissure, absorbs CSF from meinges

Question 18

inferior sagittal sinus

Answer 18

inferior aspect of the falx cerebri within the medial longitudinal fissure

Question 19

where does the inferior sagittal sinus drain into

Answer 19

straight sinus

Question 20

confluence of sinuses

Answer 20

where straight sinus and superior sagittal sinus drains

Question 21

confluence of sinuses leads to

Answer 21

transverse sinus

Question 22

transverse sinus leads to the

Answer 22

sigmoid sinuses

Question 23

sigmoid sinuses connect to

Answer 23

jugular veins

Question 24

meninges include:

Answer 24

dura mater, arachnoid membrane, pia mater

Question 25

the dura mater has two layers:

Answer 25

pariosteal layer, meningeal layer

Question 26

connection between lateral ventricle and 3rd ventricle

Answer 26

intraventricular foramen

Question 27

connection between the 3rd and 4th ventricles

Answer 27

cerebral aqueduct

Question 28

dura mater

Answer 28

thick outer covering, encloses entire CNS

Question 29

arachnoid mater

Answer 29

thin middle layer

Question 30

pia mater

Answer 30

thin layer directly attached to the surface of brain and spinal cord extends into every convolution of the CNS, lining the inside of the sulci supports large cerebral blood vessels

Question 31

arachnoid trabeculae

Answer 31

spider web, filamentous mesh

Question 32

dural reflections

Answer 32

infoldings of dura that fit into large crevasses of brain

Question 33

falx cerebri

Answer 33

located within the median longitudinal fissure

Question 34

falx cerebelli

Answer 34

located between right and left hemispheres of the cerebellum

Question 35

tentorium cerebelli

Answer 35

forms shelf structure between occipital lobes of cerebrum and the cerebellum

Question 36

subarachnoid space

Answer 36

where the trabeculae are located, and are filled with cerebrospinal fluid

Question 37

arachnoid granulations

Answer 37

where arachnoid emerges into the dural sinuses where CSF is filtered and drained back into the bloodstream

Question 38

where is CSF produced?

Answer 38

choroid plexus

Question 39

ependymal cells

Answer 39

surround blood capillaries in the choroid plexus and filter blood to make CSF

Question 40

where is CSF reabsorbed into the blood

Answer 40

arachnoid granulations

Question 41

septum pellucidum

Answer 41

separates lateral ventricles

Question 42

fourth ventricle is located where

Answer 42

space between the cerebellum and the pons and upper medulla

Question 43

median aperture & lateral apertures

Answer 43

(branches off 4th ventricle) connect to the subarachnoid space so the CSF can leave the ventricles

Question 44

where are choroid plexuses found

Answer 44

all four ventricles

Question 45

what are choroid plexuses made of

Answer 45

specialized ependymal cells and highly permeable capillaries

Question 46

T or F, CSF is always being produced

Answer 46

True

Question 47

how many intraventricular foramen (of monro)

Answer 47

2

Question 48

three ways CSF can leave 4th ventricle

Answer 48

lateral aperture, central canal of spinal cord, median aperture

Question 49

BBB (blood brain barrier)

Answer 49

continuous capillaries, monitored by astrocytes

Question 50

what parts of the blood brain barrier allow more to pass through

Answer 50

hypothalamus and pituitary gland capillaries (hormones), pineal gland capillaries (melatonin), choroid plexus capillaries

Question 51

meninge part that holds CSF

Answer 51

subarachnoid space

Question 52

T or F: subarachnoid space contains blood vessels

Answer 52

True