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Neuroanatomy > Cerebellum and 4th ventricle > Flashcards

Cerebellum and 4th ventricle Flashcards

1
Q

What is largest part of hindbrain?

A

Cerebellum

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2
Q

Function of cerebellum?

A

Co-ordination movement and balance

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3
Q

What is structure of cerebellum, what joins it?

A

2 hemispheres joined by vermis

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4
Q

Label

A
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5
Q

Name cerebellar peduncles?

A

1) Superior cerebellar peduncle
2) Middle cerebellar peduncle
3) Inferior cerebellar peduncle

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6
Q
A
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7
Q
A
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8
Q

Label

A
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9
Q
A
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10
Q

Label

A
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11
Q

Function substantia nigra?

A

Production dopamine

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12
Q

What connects cerebellar to other structures?

A

Superior cerebellar peduncle- midbrain
Middle cerebellar peduncle- pons
Inferior cerebellar peduncle- medullar

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13
Q

Name nucleus present in cerebellum?

A

Denate nucleus

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14
Q

Label floor of 4th ventricle

A
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15
Q

Label

A
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16
Q

Function corpus collosum?

A

Seperate L and R hemispheres

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17
Q

Label

A
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18
Q
A
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19
Q
A
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20
Q

What produces CSF?

A

Choroid plexus

21
Q

State pathway CSF?

A

1) CSF produced and secreted by choroid plexus
2) CSF flow through intraventricular foramina (Munroe) into 3rd ventricle
3) CSF flows down cerebral aqueduct into 4th ventricle
4) CSF flows out apertures
5) CSF fills subarachnoid space
6) Arachnoid granulations reabsorb

23
Q

Function intraventricular foramen? (munroe)

A

Permit CSF flow from lateral to 3rd ventricle

24
Q

Function cerebral aqueduct?

A

Permit CSF flow between 3rd and 4th ventricle

26
Q

What sulcus?
What gyrus?

A

Sulcus- grooves
Gryus- ridges

27
Q

Where is primary motor cortex and primary somatosensory cortex located?

A

Primary motor cortex-precentral gyrus
Frontal lobe

Somatosensory- postcentral gyrus
Parietal lobe

28
Q

Function motor cortex?

A

Movement of body

29
Q

Function somatosensory cortex?

A

Sensations- touch, pressure, temp, pain

31
Q

How is motor and sensory homunculi arranged?

A

Topographical and somatical

32
Q

What joins two hemisphere?

A

Corpus collosum

33
Q

Label
Function

A

Fornix
Connect hippocampus

34
Q

What nerve comes off pons?

A

Trigeminal

35
Q

Label
Function?

A

Medial geniculate- auditory to inferior colliculi
Later geniculate- visual to superior colliculi

36
Q
A

Cerebral cortex- high lvl process
Corpus collosum- connect 2 hemispheres
Thalamus- relay centre
Hippocampus- learning and memory
Amygdala- fear
Pituitary gland- hormones
Hypothalamus- maintain homeostasis

37
Q

Label

38
Q

What are 3 main types fibres link parts brains?
What link?

A

1) Association fibres- same hemisphere
2) Commissural fibres- similar function - diff hemi
3) Projection fibres- link cortex with subcortical

39
Q

What fibres link things in same hemisphere?

A

Association fibres

40
Q

What fibres link things in diff hemispheres?

A

Commissural fibres

41
Q

What fibres link cortex with subcortical?

A

Projection fibres

42
Q

What will damage to corpus collosum cause?

A

Contralateral meaning issues

43
Q

What are the functional connections between the cerebellum and brainstem? What pathways do each of these connections carry?

A

Superior peduncle- midbrain- eff and aff
Middle- Pons- corticopontocerebellar
Inferior- medulla- vestibulocerebellar

44
Q

3 ways blood supply to cerebellum?

A

1) Posterior inferior cerebellar arteries from vertebral arteries.
2) Anterior inferior cerebellar arteries from the basilar artery.
3) Superior cerebellar arteries from the basilar artery

45
Q

Function dentate nucleus? Where do efferent fibres go?

A

Plan, initiate and control voluntary movements
Via sup peduncle through red nucleus to thalamus

46
Q

Function of postrema?

A

Chemoreceptive trigger zone for vomitting
Detect toxins/harmful

47
Q

If cerebral lesion present:
Can nystagmus present?
Can muscle hypertonia present?
Resting tremor occur
Caused MS

A

Cerebral lesion:
Can cause nystagmus
HYPOTONIA
INTENTION tremor
caused ms

48
Q

What tremor does cerebellar lesion cause?

A

Intention tremor

Neuroanatomy (13 decks)

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