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1 NAS > AP03 - the brain and its' meninges > Flashcards

AP03 - the brain and its' meninges Flashcards

1
Q

What are the 4 main lobes of the brain?

A

Frontal lobe
occipital lobe
parietal lobe
temporal lobe

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2
Q

What is the frontal lobe for?

A

planning motor function

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3
Q

What is the parietal lobe for?

A

proprioception

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4
Q

What is the occipital lobe for?

A

optical sensory information

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5
Q

What is the temporal lobe for?

A

receives auditory information

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6
Q

What are the three hidden lobes?

A

insular, occipitoparietal, and limbic lobes

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7
Q

What are the ridges and valleys called?

A

The ridges are Gyri and the valleys are Sulci

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8
Q

What separates the frontal and parietal lobe?

A

The central sulcus

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9
Q

What separates the temporal lobe from the frontal and parietal lobes?

A

The lateral sulci

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10
Q

How could you see the insula?

A

separate the temporal and frontal lobes

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11
Q

What is the limbic lobe for?

A

emotional response

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12
Q

Where is the midbrain?

A

connects to the forebrain and hindbrain (just above the pons)

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13
Q

What does the pons do?

A

relays signals from the forebrain to the cerebellum

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14
Q

What does the midbrain do?

A

controls motor movement (like in the eye)

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15
Q

What does the medulla do?

A

homeostasis

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16
Q

What does the cerebellum do?

A

focuses fine motor movements

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17
Q

What are the 3 layers to the meninges?

A

Dura mater (endosteal and meningeal)
Arachnoid layer
Pia mater

18
Q

What happens when the meningeal layer of the dura mater moves inwards?

A

it forms dural sinuses filled with venous blood

19
Q

What does the arachnoid layer contian

A

CSF

20
Q

What is the pia mater for?

A

BBB!!!!!!!

21
Q

What might happen after damage to the frontal lobe?

A

dementia

22
Q

What is one major effect of parietal lobe damage?

A

Gerstmann’s syndrome

left right confusion

23
Q

What might happen to those with a damaged occipital lobe?

A

partial blindness

24
Q

What symptoms might suggest there is damage to the temporal lobe?

A

hearing loss

25
Q

How might you alleviate the symptoms of epilepsy?

A

cutting through the corpus callosum in a corpus callosotomy

26
Q

What is a subdural haematoma?

A

venous blood collections between the endosteal and meningeal layers of the dura

27
Q

What is an epidural haematoma

A

arterial blood collects between the inner table of the skull and the stripped-off dural membrane

28
Q

What are the left and righ sides of the brain separated by?

A

longitudinal fissue

29
Q

What is the occipital lobe separated from the cerebellum by?

A

tentorium cerebelli

30
Q

What are the lobes of the cerebellum?

A

rostral lobe
caudal lobe
Flocculonodular lobe

31
Q

What are the three main functions of the CSF?

A

protection
bouyancy
chemical stability

32
Q

Where is the 3rd ventricle located?

A

inferior and medial to the lateral ventricles

33
Q

Where is the 4th ventricle located?

A

inferior to the lateral ventricles, posterior to the 3rd ventricle

34
Q

Where does the 4th ventricle receive CSF from?

A

3rd ventricle via the cerebral aqueduct.

35
Q

Where does the 4th ventricle send CSF to?

A

central spinal canal

subarachnoid cisterns

36
Q

Where is CSF reabsorbed?

A

the arachnoid villi into dural sinuses

37
Q

How does the colliculus orientate a mammal to its’ surroundings?

A

Saccades (vertical and horizontal)

38
Q

Where do horizontal saccades go through?

A

the Pons

39
Q

What do vertical saccades go through?

A

the midbrain

40
Q

What is the corpus callosum for?

A

coordination between left and right hemispheres

41
Q

What is the structure of the corpus callosum?

A

Anterior (Genu, Rostrum)
Body
Posterior (Splenium, the big bit)

42
Q

How might the symptoms of epilepsy be alleviated?

A

corpus callostomy

1 NAS (12 decks)

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