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Neuroanatomy > Blood Supply, meninges and CSF > Flashcards

Blood Supply, meninges and CSF Flashcards

1
Q

Identify the artery indicated by the arrow

A

Subclavian artery

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2
Q

Identify the artery indicated by the arrow

A

Common carotid artery

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3
Q

Identify the artery indicated by the arrow and name the structures it is passing through

A
  • Vertebral artery
  • Passing through the foramen transversarium
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4
Q

Identify the artery indicated by the arrow and state what it supplies

A
  • Internal carotid artery
  • Supplies the brain
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5
Q

Draw a rough sketch of the circle of Willis

A
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6
Q

Which groups of central arteries penetrate the deep brain tissue in the region of the circle of Willis?

A
  1. Anteromedial group
  2. Anterolateral group
  3. Posteromedial group
  4. Posterolateral group
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7
Q

Where does the medial striate artery branch from and what does it supply?

A
  • Branch of anterior cerebral
  • Supplies the anterior part of the internal capsule
  • Also known as the artery of Heubner
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8
Q

Identify the arteries indicated by the arrows in the picture

A
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9
Q

What is the origin of the anteromedial group of arteries?

A

Anterior cerebral and anterior communicating arteries

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10
Q

What structures are supplied by the anteromedial group of arteries?

A
  • Anterior hypothalamus
  • Preoptic area
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11
Q

What is the origin of the anterolateral group of arteries?

A

Middle cerebral artery

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12
Q

What structures are supplied by the anterolateral group of arteries?

A
  • Head of the caudate nucleus
  • Lateral part of pallidum
  • External capsule
  • Claustrum
  • Putamen
  • Internal capsule (anterior limb, genu and part of posterior limb)
  • Lateral hypothalamus
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13
Q

What is the origin of the posteromedial group of arteries?

A

Posterior cerebral and posterior communicating arteries

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14
Q

What structures are supplied by the posteromedial group of arteries?

A
  • Thalamus (anterior and medial parts)
  • Subthalamus
  • Hypothalamus (middle and posterior parts)
  • Midbrain (medial part of cerebral peduncle)
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15
Q

What is the origin of the posterolateral group of arteries?

A

Posterior cerebral artery lateral to midbrain

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16
Q

What structures are supplied by the posterolateral group of arteries?

A
  • Thalamus (posterior parts, including geniculate bodies)
  • Midbrain (tectum and lateral part of cerebral peduncle)
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17
Q

What are the three arteries of the cerebellum and where do the originate?

A

From vertebral artery:

  • Posterior interior cerebellar artery

From the basilar artery:

  • Anterior inferior cerebellar artery
  • Superior cerebellar artery
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18
Q

Which arteries supply the midbrain?

A
  • Branches from the termination of the basilar artery
  • Initial segment of the posterior cerebral artery
19
Q

Which arteries supply the pons?

A
  • Pontine arteries
20
Q

Which arteries supply the medulla?

A
  • Anterior inferior cerebellar artery
  • Posterior inferior cerebellar artery
21
Q

Which arteries supply the choroid plexus of the lateral and 3rd ventricles?

A

One anterior and two posterior choroidal arteries on each side

22
Q

Which arteries supply the choroid plexus of the 4th ventricle?

A

Branches from the anterior inferior cerebellar artery

23
Q

Which sinus is indicated by the arrow?

A

Superior sagittal

24
Q

Which sinus is indicated by the arrow?

A

Straight

25
Q

Which structure is indicated by the arrow?

A

Falx cerebri

26
Q

Which structure is indicated by the arrow?

A

Great cerebral vein

27
Q

Which structure is indicated by the arrow?

A

Confluence of the sinuses

28
Q

Which sinus is indicated by the arrow?

A

Transverse

29
Q

Which structure is indicated by the arrow?

A

Tentorium cerebelli

30
Q

Which sinus is indicated by the arrow?

A

Superior petrosal

31
Q

Which sinus is indicated by the arrow?

A

Inferior petrosal

32
Q

Which sinus is indicated by the arrow?

A

Basilar

33
Q

Which sinus is indicated by the arrow?

A

Cavernosus

34
Q

Which sinus is indicated by the arrow?

A

Sphenoparietal

35
Q

Which sinus is indicated by the arrow?

A

Sigmoid

36
Q

Where do the dural venous sinuses drain to?

A

The internal jugular vein

37
Q

How is the superior sagittal sinus formed?

A

The fibrous layer of the dura mater dives down to make the faux cerebri, but the periosteal layer on top carries on over which leaves a space - the superior sagittal sinus.

38
Q

What forms the subarachnoid space?

A

Arachnoid mater is like a plastic sheet over the brain - it does not follow every gyrus and sulcus.

Pia mater follows every nook and cranny and as a result there is a space left between the pia and arachnoid mater - this is the subarachnoid mater.

39
Q

How much CSF is secreted per day?

A

400-500ml per day

40
Q

What is the volume of CSF within the ventricular system of the brain at any one time?

A

~120ml

41
Q

How and where is CSF reabsorbed?

A

Reabsorbed in the dural venous sinuses by specialised structures called arachnoid granulations

42
Q

What is the function of the CSF?

A

Cushions the brain both internally (ventricles full of CSF) and externally (subarachnoid space)

43
Q

Where is CSF produced?

A

In the choroid plexus within the ventricles

44
Q
A

Neuroanatomy (15 decks)

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