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Anatomy of the brain > External structures of the brain > Flashcards

External structures of the brain Flashcards

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The Brain flashcards
1
Q

What do the Inferior posterior cerebellar arteries supply

A

Cerebellum and vermis

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2
Q

What do the inferior anterior cerebellar arteries supply

A

Middle cerebral peduncles
Lower lateral pons, anteroinferior surface of cerebellum
Flocculi
Choroid plexus of lateral ventricle

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3
Q

What does basilar artery supply

A

Cranial meninges

Cerebellum

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4
Q

What do the superior cerebellar aa supply

A

`whole superior surface of cerebellar hemispheres

Most of cerebellar white matter

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5
Q

What do the Posterior cerebral aa supply

A

Inferior aspect of cerebral hemisphere and occipital lobe

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6
Q

What do the posterior communicating aa supply

A

Optic tract
Cerebral peduncles
Internal capsule
Thalamus

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7
Q

What do middle cerebral aa supply

A

Most of lateral surface of cerebral hemispheres

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8
Q

What do anterior cerebral aa supply

A

Cerebral hemispheres apart from occipital lobes

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9
Q

What branch of vertebral aa feeds the cerebellum

A

Inferior posterior cerebellar Artemis

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10
Q

At what point on the brain stem do the two vertebral aa’s join to form the basilar aa

A

Pons

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11
Q

Whats the territory of the middle cerebral aa

A

Its a continuation of the middle cerebral aa

Supplies most of lateral surface of cerebral hemispheres

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12
Q

What is the circle of Willis made of

A 
Anterior cerebral aas
Anterior communicating cerebral aas
Internal carotid aa
Posterior communicating aa
Superior cerebellar aa
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13
Q

What is the falx cerebri

A

Infolding which goes between two hemispheres of brain

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14
Q

what are cisterns

What are the cisterns of the brain

A

Enlarged pockets of CSF created due to separation of arachnoid mater from Pia mater

Cisterna magna
Cisterna pontis
Interpeduncular cistern

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15
Q

Where is the cisterna magna

A

Between brainstem and cerebellum

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16
Q

Where is the cisterna pontis

A

Ventral aspect of pons (in front of pons)

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17
Q

Where is the interpeduncular cistern

A

Between the peduncles

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18
Q

Where do the blood vessels on the surface of the brain run

A

Subarachnoid space

19
Q

What is the function of the arachnoid granulations

A

Allow CSF to re-enter the circulation via the dural venous sinuses

20
Q

Which cistern is the largest and can be an alternative location from which to access cerebral spinal fluid

A

Cisterna magna

21
Q

Which cistern does basilar artery run through

A

Cisterna pontis

22
Q

What is the significance of Circle of Willis

A

Creates an anastomoses so if anterior or posterior circulation is cut off, then the brain can still cope

23
Q

What branch of the vertebral artery feeds cerebellum

A

Posterior inferior cerebellar aa

24
Q

What 3 main arteries supply the cerebellum

A

Superior cerebellar aa
Anterior inferior cerebellar aa
Posterior inferior cerebellar aa

25
Q

What groups of cranial nerves are usually tested together

A

3,4,6 [occulumotor, trochlear, abducens]

9,10 [glossopharyngeal, vagus]

26
Q

Which cranial nerves emerge from the midbrain

A

Oculomotor + Trochlear

27
Q

Which cranial nerves emerge from Pons

A

Trigeminal
Abducens
Facial
Vestibulocochlear

28
Q

Which cranial nerves emerge from medulla

A

Glossopharyngeal
Vagus
Accessory
Hypoglossal

29
Q

Which cranial nerves emerge from medulla/pons junction

A

Abducens
Facial
vestibulocochlear

30
Q

Which brain stem nuclei concern motor innervation of larynx, pharynx and stylopharyngeus

A

Nucleus ambiguus

31
Q

Which brain stem nuclei concern sensation of taste

A

Gustatory nucleus

32
Q

Which brain stem nuclei concern the sensation of face

A

trigeminal sensory nucleus

33
Q

Which brain stem nuclei concern motor innervation of the trapezius and SCM muscles

A

Accessory nn

34
Q

What passes through the Foramen magnum

A

CN 11
Medulla and meninges
Anterior and posterior seminal aa’s

35
Q

What passes through the hypoglossal canal

A

Hypoglossal nerve 12

36
Q

What passes through the Foramen lacer

A

Internal carotid aa and accompanying sympathetic and venous plexuses

37
Q

What passes through the Jugular foramen

A

CN 6,10,11
IJV
Meningeal branches of ascending pharyngeal and occipital aa

38
Q

What passes through Foramen spinosum

A

Middle meningeal aa+vv

Meningeal branch of CN V3

39
Q

What passes through Foramen ovale

A

Mandibular nn

Accessory meningeal aa

40
Q

What passes through Foramen rotundum

A

Maxillary nn

41
Q

What passes through optic canal

A

Optic nn

Ophthalmic aa

42
Q

What passes through Superior orbital fissure

A

Ophthalmic veins
Ophthalmic nn
CN 3,9,6
Sympathetic fibres

43
Q

What passes through internal acoustic meatus

A

CN 8,7

Anatomy of the brain (13 decks)

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