CSF, Ventricles and Meninges Flashcards

1
Q

What does the CNS develop from?

A

Neural tube

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2
Q

What are the chambers lined with?

A

Ependymal cells

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3
Q

What are ependymal cells?

A

Line chambers
Single epithelial-like cells
Partly responsible for CSF production

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4
Q

What does the ventricular system empty into?

A

Subarachnoid space

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5
Q

What is the role of CSF?

A

Lymph drainage of the brain
Auto-regulation of cerebral blood flow
Provides mechanical and immunological protection

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6
Q

Where is CSF mainly produced

A

Choroid plexus

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7
Q

Where else is CSF derived from?

A

Seepage from capillaries

Water from metabolism

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8
Q

Where does CSF circulate through?

A

Ventricular system and subarachnoid space

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9
Q

What is the choroid plexus?

A

Network of blood capillaries in each ventricle

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10
Q

What separates the ependyma of the ventricles from the surface?

A

Pia Matter

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11
Q

What are the ventricles?

A

4 CSF filled chambers in the brain

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12
Q

What does each cerebral hemisphere contain?

A

A lateral ventricle

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13
Q

Where does the lateral ventricle begin?

A

Inferior horn in temporal lobe

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14
Q

Which lobes does the lateral ventricle travel through?

A

Parietal and Frontal

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15
Q

Where does the lateral ventricle terminate?

A

Interventricular Foramina- each connects to the central third ventricle

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16
Q

Where does posterior horn of lateral ventricle protrude?

A

Occipital lobe

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17
Q

Where does anterior horn of lateral ventricle protrue

A

Further into frontal lobe

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18
Q

Where is the midline 3rd ventricle located?

A

Between Subcortical nuclei

19
Q

Where is the midline 4th ventricle located?

A

Brainstem

20
Q

What connects the lateral ventricles and the 3rd ventricle?

A

Interventricular foramina of Monro

21
Q

What runs between 3rd and 4th ventricle?

A

Aqueduct of Sylvius

22
Q

What links 4th ventricle to subarachnoid space?

A

Two lateral foramina of Luschka

One median foramen of Magendie

23
Q

What forms the roof of the 3rd ventricle?

A

Fornix

24
Q

Where is the 4th ventricle located?

A

Between the pons and the medulla anteriorly and the cerebellum posteriorly

25
Q

What is inferior to 4th ventricle?

A

Central canal of medulla oblongata

26
Q

What is superior to the 4th ventricle?

A

Aqueduct of Sylvius

27
Q

What forms the exit foramina for circulation of CSF between ventricles and subarachnoid space?

A

Foramina of Lushka and Magendie

28
Q

The meninges superficial to deep:

A

Dura matter, arachnoid matter and pia matter

29
Q

What is tightly adherent to endosteum of skull?

A

Dura matter

30
Q

What forms venous sinuses?

A

Seperation of dura matter from endosteum of skull

31
Q

What is the course of the falx cerebri?

A

Extends from crista galli to internal occipital protuberance

32
Q

What is the function of falx cerebri?

A

Protects hemispheres from torsional forces

33
Q

What is the course of tentorium cerebelli?

A

Runs between transverse sinus laterally and crest of petrous part of temporal bone anteriorly

34
Q

Function of tentorium cerebelli?

A

Supports the weight of the occipital lobes

35
Q

Where may venous blood leak?

A

Potential space between arachnoid matter and dura matter

36
Q

What fuses with fibrous epineurium of spinal nerves?

A

Pia matter

37
Q

What does the ophthalamic branch of the trigeminal nerve supply?

A

Supratentorial part of the dura and upper surface of the tentorium

38
Q

What does the anterior ethmoidal branch supply

A

Anterior cranial fossa (to lesser extent)

39
Q

What does the maxillary nerve supply?

A

Anterior part of middle cranial fossa

40
Q

What does the meningeal branch of mandibular nerve supply?

A

Posterior part of middle cranial fossa

41
Q

What supplies the tentorium cerebelli?

A

Meningeal branch of 9th cranial nerve

42
Q

WHat supplies the upper part of bony posterior fossa?

A

Meningeal branch of 10th cranial nerve

43
Q

What is the major blood supply of meninges?

A

Meningeal branch of maxiallary artery