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Ana 203 Part B > Meninges And Dural Venous Sinus > Flashcards

Meninges And Dural Venous Sinus Flashcards

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1
Q

DURA MATTER –aka _____

LEPTOMENINGES=____ +___

A

PACHYMENINX

arachnoid

pia

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2
Q

DURA

  • At the foramen magnum, the endosteal layer of the dura matter ——-continuous with the—— of——-.
  • Around margins of all—— of the——,it becomes continuous with the——-
A

does not become ; dura; spinal cord.

foramina; skull

periosteum on the outside of the skull.

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3
Q

Dura matter

dense or thin?
strong or weak?
fibrous or serous?

A

Dense
Strong
Fibrous

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4
Q

Dura matter has 2 layers
List them

And they are Closely united except along certain lines, where they separate to form——

A

Endosteal layer;Meningeal layer

venous sinuses.

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5
Q

MENINGEAL LAYER
- Infolds to give—— septae
List them

-the septaes restrict ——of brain associated with acceleration & deceleration, when——

A

4

  • FALX CEREBRI
  • TENTORIUM CEREBELLI
  • FALX CEREBELLI
  • DIAPHRAGMA SELLA

displacement ; head is moved

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6
Q

FALX CEREBRI

  • aka the——
  • Occupies the ——between——
  • _____in its upper fixed margin.
  • Inferior sagittal sinus in its——-
  • ____sinus runs along its attachment to——
A

sickle

longitudinal fissure ; cerebral hemispheres.

Superior sagittal runs

lower concave free margin.

Straight; tentorium cerebelli.

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7
Q

Tentorium Cerebelli

  • aka the——
  • Covers the——- surface of——.
  • Supports—— lobes of cerebral hemispheres.
  • The opening accommodates the——-.
  • ____passes thru the tentorial notch.
A

tent

superior; cerebellum

occipital

brainstem

Midbrain

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8
Q

Falx Cerebelli

  • A small—— septum below the——.
  • Partially separates———
A

midsagittal; tentorium

cerebellar hemispheres

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9
Q

Diaphragma Sella
-Roofs over the——- fossa.
•Perforated by the—— of the——

A

pituitary

infundibulum; pituitary

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10
Q

BLOOD SUPPLY of the meninges
———
———-
———-

A

MID. MENINGEAL

  • ANT. MENINGEAL
  • POST. MENINGEAL
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11
Q

ARACHNOID is a delicate network

T/F

A

T

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12
Q

ARACHNOID

  • Separated from dura by a ——filled by a——
  • Separated from pia by—— space, filled with——.
  • Outer & inner surfaces covered with——- cells.
A

potential space – the subdural space; film of fluid.

subaracnoid; CSF; flattened mesothelial

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13
Q

In certain situations, arachnoid & pia widely separated to form___-

List them

——,——-,—— &—— sinuses.

A

cisternae

cisterna cerebellomedullaris

cisterna interpeduncularis

pontine; chiasmatic

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14
Q

In some areas, arachnoid matter project into____- and are called —— and are most numerous along ——sinus.
-Aggregations of it is called ——–

A

venous sinuses

Arachnoid villi

Superior sagittal

arachnoid granulations

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15
Q

PIA matter

soft or hard
thin or dense
delicate or tough

A

Soft
Thin
Delicate

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16
Q

List the 2 layers of the pia matter

A

Epipial

Intima pia

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17
Q

EPIPIAL layer of pia matter

-_____FIBERS; ABSENT ON———

A

COLLAGENOUS

CONVEXITY OF BRAIN

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18
Q

INTIMA PIA

-INNER MEMBRANOUS LAYER; MADE OF——- &——- FIBERS.

A

RETICULAR; ELASTIC

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19
Q

—— layer of the pia matter follows brain contour

A

Intima pia

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20
Q

Intima pia

Vascular of AVASCULAR?

A

AVASCULAR; PERIVASCULAR SPACE;

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21
Q

CEREBRAL VESSELS LIE ON SURFACE OF——- WITHIN—— SPACE

A

INTIMA pia; SUBARACHNOID

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22
Q

Which meninges are vascular?

A

Pia matter

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23
Q

INTRACRANIAL VENOUS SINUSES

  • The dural venous sinuses situated b/w———
  • Receive blood from brain thru——
  • Receive CSF from——- space thru——
  • Sinuses draining superiorly & posteriorly converge near the ———to form the——
  • Lined by—-.
  • Walls are —— but——-.
  • Emissary veins connect sinuses with——
A

the layers of dural mater.

cerebral veins.

subarachnoid; arachnoid villi.

internal occipital protruberance ; confluence of sinuses.

endothelium

thick; lack muscular tissue

diploic veins & veins of scalp

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24
Q

DURAL venous sinuse have few valves

T/F

A

F. No valves.

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25
DURAL VENOUS SINUSES | List 9😬
- Superior sagittal sinus - Inferior sagittal sinus - Straight sinus - Transverse sinus - Sigmoid sinus - Occipital sinus - Cavernous sinus - Superior petrosal sinus - Inferior petrosal sinus
26
Subdural hemorrhage- results from tearing of ——-veins where they enter the——. Epidural/Extradural hemorrhage- from injuries to—— .___ division of it  is commonly damaged.
superior cerebral ; SSS meningeal arteries and veins. Anterior
27
Which is more common. | Subdural hemorrhage or middle meningeal bleeding.?
Subdural hemorrhage
28
Subarachnoid hemorrhage- usually results from rupture of—— on——
congenital aneurysm circle of Willis
29
VENRICULAR SYSTEM
-cavities inside the Brain containing —- - lateral ventricles in—— - 3rd ventricle in ——- - 4th ventricle in——-
CSF cerebral hemispheres diencephalon rhombocephalon
30
Lateral Ventricle -One in each cerebral hemisphere that are Linked by ——-of——. Essentially has a—— part & 3 extensions-horns:——-
interventricular foramen ; Munro central; Anterior horn;Posterior horn;Inferior horn
31
ANTERIOR HORN OF LAT. VENTRICLE
-___to interventricular foramen. - Extends to____ lobe. - Roof & rostral wall formed by—- - Medial wall is the—— - Lateral wall formed by—- of——
Rostral; frontal c/callosum. septum pellucidum head; caudate nucleus.
32
CENTAL PART  OF LATERAL VENTRCLE - ___ shape in cross-section. - Roof—— of——- - Medial wall-___,____ - Floor -_____,_____, —— ——alis,—- vein.
Triangular Trunk; corpus callosum. Septum pellucidum; body of fornix Superior surface of thalamus caudate nucleus; striae termin; thalamostriate
33
Inferior HORNOF LAT. VENTRICLE - RUNS FORWARDS & DOWNWARDS INTO____ LOBE - Has a roof & floor - ROOF- Inf surface of tapetum of____ & tail of____ - FLOOR- Laterally by——/ & medially by____
TEMPORAL corpus callosum; caudate nucleus. collateral eminence ;hippocampus
34
Functions of CSF ——- ——- -Metabolic exchange of——- &——-.
Buoyancy Protection nutrition excretion
35
Production of CSF Formed mainly in the ___of the lateral, 3rd & 4th ventricles -some from—— cells & brain substance thru ——spaces.
choroid plexuses ependyma; perivascular
36
—% of CSF is produced by choroid plexus | -___% thru metabolism;___% by capillaries.
70 12 18
37
In adults, the total volume of CSF in all the spaces combined is normally about—— mL. But about—- to—- mL of CSF is produced and reabsorbed daily
150 400; 500
38
CSF From lateral ventricles into—— thru——— - Goes into—— thru—— - Then CSF escapes thru the median aperture (——) & lateral foramina of the lateral recesses of the 4th ventricle (——-) & enters the——
3rd ventricle; interventricular foramina of Munro. 4th ventricle; cerebral aqueduct of Sylvius. foramen of Magendie; foramina of Luschka subarachnoid space.
39
Fluid from subarachnoid space moves thru—— - then Flows upwards thru the ——-of tentorium cerebelli to get to the—— surface of the——. - Then to—— aspect of the cerebral hemispheres & subarachnoid space surrounding the—— - The main sites for absorption of CSF are the——-
cerebellomedullary & pontine cisterns tentorial notch ; inferior; cerebrum lateral; spinal cord. arachnoid villi
40
Papilloedema.:—— swelling that is secondary to——-.
optic disc; elevated intracranial pressure
41
Lumbar puncure.: aka——

spinal tap
42
Cisternal puncture:—— puncture can be performed in order to collect a sample of cerebrospinal fluid (CSF) for analysis, or rarely to——
suboccipital relieve increased intracranial pressure.
43
In acute papilledema, vision is well preserved | T/F
T
44
Hydocephalus.: is the ————within the brain 

build-up of fluid in the cavities deep
45
Queckenstedt’s sign.: test formerly used to diagnose———, in which a lumbar puncture is performed and the ——-measured, followed by manual compression of both—- ,causing a rise in intracranial pressure.
lumbar spinal stenosis; opening pressure jugular veins
46
Ependymomas.: Ependymomas are——- tumors that grow in your—- or———, including your neck and upper and lower back. They form at first in your—— cells in the ——-and in the—— of the brain
cancerous brain any part of the spine ependymal middle of your spinal cord ventricles
47
BBB and drugs.: BBB prevents —-The presence of the BBB makes difficult the——-
entry into the brain of most drugs from the blood. development of new treatments of brain diseases, or new radiopharmaceuticals for neuroimaging of brain
48
BBB in newborn.: Since the blood-brain barrier is——- at birth, the risk of toxicity from exposure to some chemicals is——- than it is for——.
not fully developed higher for newborns and young children adults
49
4TH VENTRICLE Broad or narrow? shallow or deep? ___-shaped cavity with multiple recesses -overlying the—- and——-.
Broad; shallow rhomboid pons; medulla
50
4TH VENTRICLE Roof - Floor-
Cerebellum Rhomboid fossa
51
4th ventricle 1 lateral recess on each side over the——- to open into the——— cistern. -Foramina of—— in lateral recesses & a small opening, the foramen of —— in the median plane of the caudal region of the ventricle.
inferior cerebellar peduncle; cerebellomedullary (magna) Luschka Magendie
52
RHOMBOID FOSSA - DIVISIBLE INTO 2—- shaped PARTS - INTERMEDIATE PORTION MARKED By TRANSVERSELY RUNNING FIBERS called —— - DIVIDED INTO RT & LT BY THE——
TRIANGULAR STRIAE MEDULLARES MEDIAN SULCUS
53
``` 3RD VENTRICLE -Situated in the median plane b/w the——-. -Anterior wall -_____- thin sheet of gray matter. -_____commissure. -Anterior columns of——. Posterior wall -Opening into—- -____commissure.
-____recess &___ body.
-____commissure. ```
2 thalami Lamina terminalis; Anterior; fornix cerebral aqueduct; Posterior Pineal; pineal Habenular
54
3rd Ventricle ``` Lateral wall -___surfaces of——-
-____surfaces of——- Roof -;____;——-;——- Floor -_____ ```
Medial; thalamus Medial; hypothalamus Choroids plexus; Fornix; Corpus callosum Optic chiasma
55
Endo steal layer of dura matter is continuous with sutural ligaments T/F
T
56
Endo steal layer of dura matter provides tubular sheath for cranial nerves T/F
F
57
Dura matter is inneervated by ? ``` Trigeminal nerve Facial Vagus 1-5 cervical nerves Parasympathetic nerves ```
``` T F T F F ```
58
Tentoroum cerebelli is attached to : ``` Crista galli Anterior clinoid process Tentorial notch Superior border of Petrous bones Margins of the grooves for the transverse sinuses ```
``` F T F T T ```
59
Subarachnoid space: Avascular Continues to S1 T/F
T | T
60
Obstruction of CSF leads to hydrocephalus T/F
F
61
Froin’s syndrome is xterized by ___ discoloration of CSF
Yellow
62
Communicating hydrocephalus occurs when the stuff occurs in the ventricles T/F
F

Ana 203 Part B (15 decks)

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