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Neurology > Blood Supply to the Brain and Spinal Cord > Flashcards

Blood Supply to the Brain and Spinal Cord Flashcards

1
Q

At what spinal level does the common carotid artery bifurcate?

A

C4

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2
Q

What is the pathway of the ICA into the cranial cavity?

A

Move up the carotid sheath to the carotid canal

Pass through the cavernous sinus

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3
Q

What branches does the ICA give rise to?

A

Ophthalmic
Middle cerebral
Posterior communicating
Anterior cerebral

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4
Q

What arteries give rise to the vertebral arteries?

A

Subclavian

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5
Q

What is the pathway of the vertebral arteries into the cranial cavity?

A

Transverse foramen in the spine

Foramen magnum

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6
Q

What branches do the vertebral arteries give rise to?

A

Meningeal branches
Anterior and posterior spinal
Posterior inferior cerebellar

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7
Q

In which fissure is the anterior cerebral artery found?

A

Longitudinal fissure

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8
Q

In which fissure is the middle cerebral artery found?

A

Lateral fissure

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9
Q

In which fissure is the posterior cerebral artery found?

A

Transverse fissure

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10
Q

What functional areas does the middle cerebral artery supply?

A

Primary motor cortex
Primary sensory area
Primary auditory area
Area for olfaction

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11
Q

Where does the primary visual cortex receive its blood supply from?

A

Calcarine branch of posterior cerebral artery

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12
Q

What artery is formed from the convergence of the vertebral arteries?

A

Basilar artery

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13
Q

What main arteries form the Circle of Willis?

A

Anterior cerebral arteries
Internal carotid arteries
Posterior cerebral arteries

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14
Q

What part of the brain does the anterior cerebral artery supply?

A

Anteromedial part of the cerebrum

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15
Q

What part of the brain does the middle cerebral artery supply?

A

Lateral part of the brain

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16
Q

What part of the brain does the posterior cerebral artery supply?

A

Posterior part of the cerebrum

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17
Q

What arteries supply the spinal cord?

A

Anterior spinal artery

2 posterior arteries

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18
Q

Where do the venous sinuses ultimately drain to?

A

Internal jugular vein

19
Q

How many venous sinuses are there?

A

11

20
Q

What venous sinuses are found in the fall cerebri?

A

Superior sagittal sinus
Inferior sagittal sinus
Straight sinus

21
Q

Where do the sinuses converge?

A

Confluence of the sinuses

22
Q

What pathway does the confluence of sinuses take to the internal jugular vein?

A

Transverse to sigmoid to internal jugular vein

23
Q

Where is the cavernous sinus located?

A

Either side of the sella turcica

24
Q

What drains into the cavernous sinus?

A

Ophthalmic sinus

25
Q

What are the superficial veins which drain the cerebral cortex?

A 
Superior cerebral vein 
Superficial middle cerebral vein 
Inferior cerebral vein 
Superior anastamotic vein 
Inferior anastomotic vein
26
Q

What veins are responsible for draining the cerebellar cortex?

A

Superior cerebellar veins

Inferior cerebellar veins

27
Q

What veins are responsible for draining the spinal cord?

A

3 anterior spinal veins

3 posterior spinal veins

28
Q

What is the function of the ventricles?

A

Production, transport and removal of CSF

29
Q

What is the function of cerebrospinal fluid?

A

Protection (cushions brain)
Buoyancy (reduces weight of brain, so reduced pressure on base)
Chemical stability

30
Q

What are the ventricles lined with?

A

Ependymal cells

31
Q

What do the ependymal cells form?

A

Choroid plexus

32
Q

What are the ventricles embryologically derived from?

A

Neural tube

33
Q

Hw many ventricles are there?

A

4

34
Q

Where are the lateral ventricles located?

A

Cerebrum (horns extend into occipital, frontal and temporal lobes)

35
Q

Where is the third ventricle located?

A

Between the right and left thalamus

36
Q

What connects the third ventricle to the lateral ventricles?

A

Foramen of Munro

37
Q

What are the 2 processes that are found on the third ventricle?

A

Supra optic recess

Infundibular recess

38
Q

Where is the supra optic recess located?

A

Above the optic chiasma

39
Q

Where is the infundibular recess located?

A

Above the optic stalk

40
Q

Where is the fourth ventricle located?

A

Between the pons and the medulla

41
Q

What connects the third and fourth ventricles?

A

Cerebral aqueduct

42
Q

From the fourth ventricle, where does the CSF drain?

A

Central spinal canal

Subarachnoid cisterns

43
Q

What produces CSF?

A

Choroid plexus

Neurology (39 decks)

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