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systems- neuro- oc > topography of the brain > Flashcards

topography of the brain Flashcards

1
Q

what is present in white matter?

A

myelinated axons

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2
Q

what is present in grey matter?

A

neuronal cell bodies

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3
Q

what is involved in white matter in spinal cords and brain

A

various tracts

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4
Q

what is a tract?

A

fibre pathway passing through the CNS carrying a specific modality

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5
Q

what would you call a neuronal cell body collection within CNS

A

nucleus

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6
Q

what would you call neuronal cell bodies outside the CNS ?

A

ganglion

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7
Q

what are ventricles?

A

spaces within the brain

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8
Q

what are the ventricles within cerebral hemispheres?

A

lateral ventricle

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9
Q

what is the ventricle within diencephalon

A

III ventricle

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10
Q

what are the ventricles within the midbrain?

A

cerebral aqueduct

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11
Q

what are the ventricles between pons and medulla and cerebellum?

A

IV ventricle

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12
Q

where is the cerebral fluid present?

A

inside ventricles and vetween pia and arachnoid

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13
Q

where is the CSF formed?

A

by choroid plexus in each ventricle

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14
Q

where is the CSF absorbed?

A

by arachnoid villi into saggital sinus

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15
Q

where do the 2 internal carrots arteries enter the skull through?

A

the carotid canal (foramen lacerum)

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16
Q

how is the basilar arteries formed?

A

2 vertebral arteries join together on the ventral surface of the brainstem

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17
Q

what does the vertebra-basilar system give branches to supply?

A

brainstem and cerebellum

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18
Q

what is included in the anterior cerebral?

A

Medial aspect of cerebral hemispheres excluding Occipital lobe.

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19
Q

what is included in the middle cerebral

A

Lateral aspect of cerebral hemispheres

20
Q

what is included in the posterior cerebral?

A

Inferior aspect of cerebral hemispheres and Occipital lobe.

21
Q

what do the dural venous sinues join to drain into?

A

internal jjugular veins

22
Q

what does the neural tube develop from?

A

dorsal surface ectoderm

23
Q

how are the vesicles formed?

A

as soon as the neural tube was formed, it divided into 3 primary vesicles and then into 2yr vesicles

24
Q

function of the brainstem centres

A

produce the rigidly programmed automatic behaviours essential for survival.

25
Q

what are involved in the brainstem?

A

midbrain, pons and medulla

26
Q

what ventricle is the cavity of the medulla

A

IV ventricle

27
Q

what are the contents of the white matter of medulla section?

A

Pyramidal tract
Medial lemniscus
Inferior cerebellar peduncle
Other tracts.

28
Q

what are the contents of the grey matter of the medulla part?

A 
Cranial n nucleii & inferior olivary nucleus
Nucleii of the Reticular formation (vital centres)
Sensory nucleii (gracile and cuneate)
29
Q

where is the IV ventricle in relation to the Pons

A

posterior

30
Q

what are the surface features of pons?

A

Middle cerebellar peduncle

Cranial nerves V, VI, VII & VIII originate from its surface.

31
Q

what are the contents of the white matter of the pons

A 
Middle cerebellar peduncle
Medial lemniscus (sensory)
Pyramidal tract (motor)
32
Q

what are the contents of the grey matter of the pons

A

Cranial n. nucleii
Pontine nucleii
Nucleii of Reticular formation

33
Q

where does the midbrain develop from?

A

mesencephalon

34
Q

surface features fo the midbrain

A

Cerebral peduncle
Superior cerebellar peduncle
Corpora quadrigemina (superior & inferior colliculus)
Origin of Oculomotor (CN III) & Trochlear (CN IV)

35
Q

what are the right and left hemispheres seperated by in the cerebellum?

A

vermis

36
Q

what does each hemisphere contain?

A

anterior, posterior and flocculonodular lobe

37
Q

what is on the surface of the cerebellum?

A

sulci and folia.

38
Q

how many cerebellar peduncles connect it to the brainstem?

A

3

39
Q

function of the cerebellum

A

Posture maintenance

Fine tuning motor activity

40
Q

where is the diencephalon found?

A

Deep within cerebral hemispheres, around the III ventricle

41
Q

what does the diencephalon develop from?

A

from diencephalic vesicle

42
Q

what does the thalamus contain?

A

groups of nucleii - anterior, medial and lateral group.

43
Q

what are the lateral group of the thalamus involved in?

A

processing sensory information

44
Q

what is the thalamus?

A

sensory relay station

45
Q

where does the hypothalamus lie?

A

below the thalamus separated from it by the hypothalamic sulcus.

46
Q

what are the homeostatic role of hypothalamus?

A 
Autonomic Control Centre
Body temperature regulation
Regulation of food intake
Regulation of water balance & thirst
Regulation of sleep-wake cycle
Control of endocrine system functioning
47
Q

function of the brainstem

A

Vital centres (respiratory, cardiovascular), cranial nerve nucleii III-XII.

systems- neuro- oc (51 decks)

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