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NEUROANATOMY > MENINGES + CSF (PART 2 CSF And VENTRICLES) > Flashcards

MENINGES + CSF (PART 2 CSF And VENTRICLES) Flashcards

1
Q

Cerebrospinal Fluid is located in

  1. 2.
A
  1. In the ventricular system of the brain/central canal of spinal cord
  2. subarachnoid space around brain and
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2
Q

Cerebrospinal Fluid is formed in:
1.
2.

A
  1. Choroid plexuses of ventricles ( more from lateral ventricle)
  2. Capillaries on the surface of the brain and spinal cord
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3
Q

The quantity of CSF is _________ ml

A

130ml

Nb: 30ml in the Ventricular System + 100ml in subarachnoid space ( 75ml in spinal + 25ml in cranial)

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4
Q

Cerebrospinal Fluid is formed at a rate of _________

A

200ml/hour or 500ml/day

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5
Q

The CSF circulate :

  1. ______________
  2. ______________
  3. ______________
A
  1. From the Lateral ventricles to the 3rd Ventricle via the Interventricular Foramen
  2. From the 3rd Ventricle to the 4th Ventricle via the Cerebral Aqueduct
  3. From the 4th Ventricle to the Sub arachnoid Space via the two (paired) lateral Aperture and Medial Aperture
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6
Q

The CSF circulate :

  1. From the Lateral ventricles to the 3rd Ventricle via_______
  2. From the 3rd Ventricle to the 4th Ventricle via ________
  3. From the 4th Ventricle to the Sub arachnoid Space via __________
A
  1. Interventricular Foramen
  2. the Cerebral Aqueduct
  3. the two (paired) lateral Aperture and Medial Aperture
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7
Q

The CSF is Absorbed through:

4.

A
  1. arachnoid villi and granulations (from the arachnoid mater) and drained into the Cranial Dura venous Channel (Superior Sagital Sinus)
  2. veins related to spinal nerves
  3. perineural lymphatics around the CNI, CNII, CNVIII
  4. cribriform plate to the nose and then cervical lymphatics
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8
Q

The CSF is Absorbed through:

  1. arachnoid villi and granulations (from the arachnoid mater) and drained into the Cranial Dura venous Channel (_____________)
  2. veins related to _____
  3. perineural lymphatics around the ___________
  4. _______ plate to the nose and then _______ lymphatics
A
  1. Superior Sagital Sinus
  2. spinal nerves
  3. CNI, CNII, CNVIII
  4. cribriform, cervical
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9
Q

Functions of the CSF:

4.

A
  1. Protection – buffer & Shock absorber.
  2. Nutrition
  3. Pathway for metabolite from the CNS
  4. Helps to reduce the weight of the brain from 1500g to 50g
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10
Q

Functions of the CSF:

  1. ________ – buffer & Shock absorber.
  2. Nu___ion
  3. Pathway for ______ from the CNS
  4. Helps to reduce the weight of the brain from _____g to ____g
A
  1. Protection
  2. Nutrition
  3. metabolite
  4. 1500g to 50g
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11
Q

CLINICAL ANATOMY OF THE CSF:

4.

A

CLINICAL ANATOMY OF THE CSF:

  1. Therapeutic: Drainage of CSF at regular intervals is important in the treatment of Meningitis (Inflamation of Arachnoid and Pia matter) and also cure for intractable headaches of unknown aetiology
  2. CSF can be used in Diagnostic Analysis of Diseases
  3. CSF can be obtained via LUMBAR, CISTERNAL and VENTRICULAR PUNCTURE

(Lumbar puncture is the easiest and it can be obtained most commonly at 3rd and 4th Lumber Spine)

  1. Obstruction to the flow of CSF can lead to HYDROCEPHALUS (in children) and Raised INRACRANIAL PRESSURE (IN ADULTS)
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12
Q

CLINICAL ANATOMY OF THE CSF:

HYDROCEPHALUS MEANS

A

It means Dilation of the Ventricular System

it can be:
1. Communication Hydrocephalus (When the obstruction is outside the ventricular system)

  1. Non communicating Hydrocephalus ( when the obstruction is within the ventricular system)
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13
Q

CLINICAL ANATOMY OF THE CSF:

CLINICAL ANATOMY OF THE CSF:

  1. _________ : Drainage of CSF at regular intervals is important in the treatment of Meningitis (Inflamation of Arachnoid and Pia matter) and also cure for intractable headaches of unknown aetiology
  2. CSF can be used in __________ of Diseases
  3. CSF can be obtained via _______, ______ and ________

(Lumbar puncture is the easiest and it can be obtained most commonly at 3rd and 4th Lumber Spine)

  1. Obstruction to the flow of CSF can lead to _______ (in children) and Raised _______ (IN ADULTS)
A
  1. Therapeutic
  2. Diagnostic Analysis
  3. LUMBAR, CISTERNAL and VENTRICULAR PUNCTURE
  4. HYDROCEPHALUS and INRACRANIAL PRESSURE
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14
Q

Ventricular System of the Brain include the:

  3. 4.
A
  1. Lateral ventricle
  2. Aqueduct of Midbrain
  3. Third ventricle
  4. Fourth ventricle
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15
Q

The fourth ventricle is situated between the ___1_____ in front and ___2___ behind

A
  1. pons and medulla

2. cerebellum

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16
Q

The fourth ventricle Boundaries:

  1. Supero-lateral = ___________
  2. Infero-lateral = ________
A
  1. Superior cerebellar penduncle

2. Inferior cerebellar peduncle, gracile and cuneate tubercles

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17
Q

The fourth ventricle is a _____ shaped space

A

Tent-shaped space

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18
Q

The fourth ventricle has a

  1. r___
  2. fl___or (rhomboid fossa)
  3. _____ boundaries
A
  1. roof
  2. floor (rhomboid fossa)
  3. lateral boundaries
19
Q

The roof of the fourth ventricle is ______ projecting into the cerebellum

A

Tent shaped

20
Q

The roof of the fourth ventricle is formed by:

  1. Superior ______ peduncle
  2. Superior ______ velum
  3. Inferior _______ velum
  4. ______ of the 4th ventricle containing the choroid plexus
A
  1. Superior cerebellar peduncle
  2. Superior medullary velum
  3. Inferior medullary velum
  4. Telachoroidea of the 4th ventricle containing the choroid plexus
21
Q

The roof of the fourth ventricle is formed by:

  3. 4.
A
  1. Superior cerebellar peduncle
  2. Superior medullary velum
  3. Inferior medullary velum
  4. Telachoroidea of the 4th ventricle containing the choroid plexus
22
Q

Choroid plexus of the 4th ventricle is supplied from the ______1____ and

the venous drainage is the ______2____

A
  1. posterior inferior cerebellar artery

2. Occipital Sinus

23
Q

The Floor of the 4th ventricle is ______ shaped

A

Rhomboidal shaped

24
Q

The Floor of the 4th ventricle is formed by :

  1. __________
  2. __________
A
  1. The posterior surface of the pons

2. The posterior surface of the open part of the medulla

25
Q

The Floor of the 4th ventricle is formed by :

  1. The posterior surface of the _____
  2. The posterior surface of the open part of the _____
A
  1. pons

2. medulla

26
Q

3rd ventricles communicate with the 4th ventricle through the _______

A

cerebral aqueduct

27
Q

Cisterna magna (subarachnoid space) communicate with the 4th ventricle through the __________

A

foramen magendie

28
Q

Pontine Cistern (subarachnoid space) communicate with the 4th ventricle through _________

A

foramen Luschka

29
Q

Inferiorly the 4th ventricle continues with the central canal of the______

A

spinal cord

30
Q

The 3rd ventricle is a ____1___ space, lying in the sagittal plane below the fornix and the _____2___

A
  1. slit-like

2. corpus callosum.

31
Q

The 3rd ventricle has an:

  4. 5.
A
  1. Anterior Wall
  2. Posterior Wall
  3. Laterial wall
  4. Roof
  5. Floor
32
Q

The Anterior wall of the 3rd ventricle is formed by:

  1. 2.
    3.

Mnemonic: LAA

A
  1. Lamina Terminalis
  2. Anterior Commissure
  3. Anterior Columns of Fornix
33
Q

The Posterior wall of the 3rd ventricle is formed by:

  1. 2.
    3.

Mnemonic: PPC

A
  1. Pineal gland
  2. Posterior commissure
  3. Cerebral aqueduct
34
Q

The Roof of the 3rd ventricle is formed by ___________

A

ependymal lining (under surface of tela choroidea of 3rd ventricle)

35
Q

The Lateral wall of the 3rd ventricle is formed by:

  1. 2.
    3.

Mnemonic: Thalamus

A

Thalamus – its medial surface
Hypothalamus
Hypothalamic sulcus

36
Q

The floor of the 3rd ventricle is formed by ___________

A

hypothalamic structures

37
Q

The Lateral Ventricle are ______ cavities

A

2 irregular cavities

Nb it is the first and second ventricles

38
Q

The Lateral Ventricle are Situated in the _____

A

cerebral hemisphere

39
Q

The Lateral Ventricle has the following parts:

1.

2.

3.

A
  1. Central part or Body
  2. Horns: anterior, posterior and inferior horns
  3. Choroid plexus (located only in body and inferior horn)

Nb:
1. The Anterior Horn is found in the Frontal Lobe

  1. The Body is found in the Parietal Lobe
  2. The Posterior Horn is found in the Occipital Lobe
  3. The Inferior Horn is found in the Temporal Lobe
40
Q

The Lateral Ventricle has the following parts:

  1. Central part or _____
  2. Horns: ____, ____, ____ horns
  3. ______ (located only in body and inferior horn)
A
  1. Body
  2. anterior, posterior and inferior
  3. Choroid plexus

Nb:
1. The Anterior Horn is found in the Frontal Lobe

  1. The Body is found in the Parietal Lobe
  2. The Posterior Horn is found in the Occipital Lobe
  3. The Inferior Horn is found in the Temporal Lobe
41
Q

Boundaries of the BODY of the Lateral Ventricle:

  1. Roof: _________
  2. Floor: _____
    Medial wall: _______
A
  1. under surface of the corpus callosum
  2. Body of caudate, stria terminalis, thalamostriate vein, lateral portion of the upper surface of the thalamus (From lateral to medial)
  3. Septum pellucidum, body of fornix
42
Q

Boundaries of the ANTERIOR HORN of the Lateral Ventricle:

  1. Anterior = ________
  2. Roof = _______
  3. Floor = _______
  4. Medial = ______
A
  1. posterior surface genu and rostrum of corpus callosum
  2. anterior part of the trunk of the corpus callosum
  3. head of caudate + upper surface of the rostrum of the corpus callosum
  4. Septum pellucidum + column of fornix
43
Q

Boundaries of the POSTERIOR HORN of the Lateral Ventricle:

  1. Floor and medial wall : ____________
  2. Roof and lateral wall: _______
A
  1. bulb of the posterior horn raised by forceps major; anterior part of calcarine sulcus
  2. tapetum of corpus callosum +optic radiation showing in the lateral wall
44
Q

Boundaries of the INFERIOR HORN of the Lateral Ventricle:

  1. Roof and lateral wall: _________
  2. Floor: _________
A
  1. Tapetum, tail of caudate lobe, stria terminalis amygdaloid body
  2. Collateral eminence- raised by collateral sulcus
    Hippocampus (medially)

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