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Anatomy Block 3 > Brain, blood supply, cranial meninges > Flashcards

Brain, blood supply, cranial meninges Flashcards

1
Q

what are the 2 parts of the diencephalon?

A

thalmus

hypothalmus

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2
Q

what is the telencephalon?

A

cerebral hemispheres

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3
Q

what rootlets are in the reto-olivary sulcus?

A

glossopharyngeal and vagus

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4
Q

what rootlets are in the pre-olivary sulcus?

A

hypoglossal nerve

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5
Q

what feature is in the cerebral midbrain on each side?

A

cerebral crura

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6
Q

what cranial nerve is in the cerebral midbrain?

A

oculomotor

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7
Q

the floor of the 4th ventricle in the brain forms what?

A

rhomboid fossa

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8
Q

the fourth ventricle is formed by what?

A

the upper part of medulla + pons & cerebellum

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9
Q

what 4 structures are on the posterior surface of the midbrain?

A

2 superior colliculi

2 inferior colliculi

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10
Q

what is the only CN that is attached to the posterior brainstem?

A

trochlear nerve

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11
Q

what separates the right and left hemispheres of the brain?

A

longitudinal fissure

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12
Q

what structure makes the longitudinal fissure incomplete?

A

corpus callosum

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13
Q

what are the 5 lobes of each hemisphere?

A 
frontal
parietal
temporal
occipital
insular
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14
Q

what are the 2 main arteries that supply the brain?

A

vertebral artery

internal carotid artery

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15
Q

what are the 4 divisions of the internal carotid artery?

A

cervical
petrous
cavernous
cerebral

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16
Q

what are the branches of the internal thoracic artery that supply the brain?

A

middle cerebral
anterior cerebral
posterior communicating
opthalmic artery

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17
Q

what is the layer of dura mater that faces the brain?

A

meningeal

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18
Q

what is the layer of dura mater that lines the inner skull bones?

A

periosteal/ endosteal

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19
Q

the falx cerebri is between what in the brain?

A

right and left cerebral hemispheres

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20
Q

the falx cerebelli is between what in the brain?

A

right and left cerebellar hemispheres

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21
Q

the tentorium cerebelli is between what in the brain?

A

cerebellum and occipital lobes

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22
Q

the diaphragma sellae forms what in the brain?

A

roof of sella turcica

23
Q

where does the blood from the dural venous sinuses drain?

A

internal jugular vein

24
Q

what does the superior sinus begin and end in?

A

begins- foramen cecum

ends- confluence of the sinuses

25
Q

where does the inferior sagittal sinus end?

A

joins the great cerebral vein to form the straight sinus

26
Q

where does the straight sinus terminate

A

confluence of the sinuses

27
Q

where is the transverse sinus (what fold)?

A

along the posterior border of the tentorium cerebelli (starts at confluence of sinuses)

28
Q

what does the transverse sinus turn into at the temporal bone?

A

sigmoid sinus

29
Q

where does the sigmoid sinus terminate?

A

jugular foramen (in the internal jugular vein)

30
Q

where is the occipital foramen (what fold)

A

along the posterior border of the falx cerebelli (ends in confluence of sinuses)

31
Q

what structures are within the cavernous sinus?

A 
internal carotid artery
abducens nerve (CN6)
32
Q

what structures are within the lateral wall of the cavernous sinus?

A 
CN 4 (trochlear)
CN 5, [parts V1 and V2] trigeminal
CN 3 (oculomotor)
33
Q

what drains the cavernous sinus?

A

the superior and inferior petrosal sinuses

34
Q

what does the superior petrosal sinus connect?

A

the cavernous sinus w/ the transverse sinus

35
Q

what does the inferior petrosal sinus connect?

A

the cavernous sinus w/ the internal jugular vein

36
Q

What are the 6 parts of the medulla?

A 
Anterior median fissure
Pyramids
Olive
Pre-Olivary sulcus
Retro-Olivary sulcus
37
Q

What cranial nerve attaches to the anterior surface of the pons?

A

Trigeminal

38
Q

The two superior colliculi are part of wha system?

A

Visual

39
Q

The two inferior colliculi are part of what system?

A

Auditory

40
Q

What separates the parietal/frontal and temporal lobes?

A

Lateral sulcus

41
Q

What separates the frontal and parietal lobes?

A

Central sulcus

42
Q

What is the lobe of the brain that is deep to the lateral sulcus ?

A

Insular lobe

43
Q

Where does the vertebral artery enter the cranial cavity?

A

Foramen magnum

44
Q

Where do the vertebral arteries from the basilar artery?

A

Medullopontine sulcus

45
Q

What 2 branches does the internal carotid artery terminate into?

A

Anterior cerebral

Middle cerebral

46
Q

What are the 4 things on the lateral wall of the cavernous sinus?

A

Oculomotor
Trochlear
Ophthalmic n. (V1)
Maxillary n. (V2)

47
Q

What are the two things inside the cavernous sinus?

A

Internal carotid artery

Abducent nerve

48
Q

Where does the sphenoparietal sinus drain into?

A

Cavernous sinus

49
Q

What is a primary brain parenchymal hemorrhage?

A

Rupture of small intraparenchymal vessels

50
Q

What is the hallmark clinical sign of a saccular aneurism?

A

Sudden excruciating headache

51
Q

What does a saccular aneurism cause if ruptured?

A

Subarachnoid hemorrhage

52
Q

What is an epidural hematoma?

A

Torn vessel in the dura, often middle Meningeal artery

53
Q

What is a subdural hematoma?

A

Tearing of bridging veins often from rapid movement

54
Q

Where do subdural hematoma so bleed into?

A

Subdural space

Anatomy Block 3 (12 decks)

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