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[OS 202] Lecture Exam A > Meninges and CSF Pathway > Flashcards

Meninges and CSF Pathway Flashcards

1
Q

Is the brain a solid or hollow organ?

A

Hollow

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2
Q

What is at the center of the brain?

A

Water

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3
Q

What structure allows the communication between the third ventricle and lateral ventricle?

A

Foramen of Monroe

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4
Q

What does the third ventricle look like?

A

Kinda like a dead chicken head

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5
Q

What is beside the THalamus?

A

THe THird Ventricle

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6
Q

What is the only ventricle found in the cerebellum?

A

The Fourth Ventricle

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7
Q

What connects the third and fourth ventricles?

A

Aqueduct of Sylvius at the midbrain

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8
Q

CSF from the 4th Ventricle Exits? (2)

A

Lushke: Lateral
Magendie: Medial

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9
Q

Complete Pathway of CSF

A

Cerebrum -> Lateral Ventricle -> Foramen of Monroe -> 3rd Ventricle -> Aqueduct of Sylvius -> 4th Ventricle -> Foramen of Lushke and Magendie

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10
Q

What forms the roof of the lateral ventricle?

A

Corpus Callosum

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11
Q

What separates the two lateral ventricles?

A

Septum Pellucidum

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12
Q

Where is the Septum Pellucidum attached?

A

Fornix

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13
Q

What is beneath the Fornix?

A

Foramen of Monroe

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14
Q

What forms the lateral wall of the lateral ventricles?

A

Caudate Nucleus

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15
Q

Is there CSF going through the Pons?
Is there CSF going through the Medulla?
Is there CSF going through the Spine?

A

No
No
Duh

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16
Q

What makes CSF?

A

Choroid Plexus

17
Q

Where does the formed CSF go?

A

Subarachnoid Space

18
Q

Subarachnoid Space is between?

A

Arachnoid Mater and Pia Mater

19
Q

Where is the Circle of Willis found?

A

Subarachnoid Space

20
Q

What is the biggest cistern of the subarachnoid?

A

Cisterna Magna

Also the only “important” one, the others are nice to know

21
Q

How much CSF is made in a day?

What is the total volume of CSF?

A

500mL/d

Total Volume: 100-160 mL

22
Q

Function of CSF

A

Cushions and nourishes brain

23
Q

Excessive CSF in the brain is called?

A

Hydrocephaly

24
Q

Name 3 Brain Protectors

A
  1. Meninges
  2. CSF
  3. Blood Brain Barrier
25
Q

What separates the cerebrum from the cerebellum?

A

Tentorium

26
Q

[Falx Cerebri]

Shape?
Attached to?

A

Sickle-shaped

Attached to the crista galli anteriorly and tentorium posteriorly

27
Q

Where is the Falx Cerebelli?

A

Small dural reflection in between the cerebellar hemispheres

28
Q

Location of the Diaphragma Sellae

A

Separates the sella turcica from everything else

29
Q

[Venous Drainage]

Pathway

A

Superior Sagittal Sinus -> Transverse Sinus -> Sigmoid Sinus -> Jugular Vein

[OS 202] Lecture Exam A (14 decks)

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