Cerebellum and 4th ventricle

Question 1

What is largest part of hindbrain?

Answer 1

Cerebellum

Question 2

Function of cerebellum?

Answer 2

Co-ordination movement and balance

Question 3

What is structure of cerebellum, what joins it?

Answer 3

2 hemispheres joined by vermis

Question 4

Label

Answer 4

Question 5

Name cerebellar peduncles?

Answer 5

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

Question 6

Answer 6

Question 7

Answer 7

Question 8

Label

Answer 8

Question 9

Answer 9

Question 10

Label

Answer 10

Question 11

Function substantia nigra?

Answer 11

Production dopamine

Question 12

What connects cerebellar to other structures?

Answer 12

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

Question 13

Name nucleus present in cerebellum?

Answer 13

Denate nucleus

Question 14

Label floor of 4th ventricle

Answer 14

Question 15

Label

Answer 15

Question 16

Function corpus collosum?

Answer 16

Seperate L and R hemispheres

Question 17

Label

Answer 17

Question 18

Answer 18

Question 19

Answer 19

Question 20

What produces CSF?

Answer 20

Choroid plexus

Question 21

State pathway CSF?

Answer 21

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

Question 22

Answer 22

Question 23

Function intraventricular foramen? (munroe)

Answer 23

Permit CSF flow from lateral to 3rd ventricle

Question 24

Function cerebral aqueduct?

Answer 24

Permit CSF flow between 3rd and 4th ventricle

Question 25

Answer 25

Question 26

What sulcus? What gyrus?

Answer 26

Sulcus- grooves Gryus- ridges

Question 27

Where is primary motor cortex and primary somatosensory cortex located?

Answer 27

Primary motor cortex-precentral gyrus Frontal lobe Somatosensory- postcentral gyrus Parietal lobe

Question 28

Function motor cortex?

Answer 28

Movement of body

Question 29

Function somatosensory cortex?

Answer 29

Sensations- touch, pressure, temp, pain

Question 30

Answer 30

Question 31

How is motor and sensory homunculi arranged?

Answer 31

Topographical and somatical

Question 32

What joins two hemisphere?

Answer 32

Corpus collosum

Question 33

Label Function

Answer 33

Fornix Connect hippocampus

Question 34

What nerve comes off pons?

Answer 34

Trigeminal

Question 35

Label Function?

Answer 35

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

Question 36

Answer 36

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

Question 37

Label

Answer 37

Question 38

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

Answer 38

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

Question 39

What fibres link things in same hemisphere?

Answer 39

Association fibres

Question 40

What fibres link things in diff hemispheres?

Answer 40

Commissural fibres

Question 41

What fibres link cortex with subcortical?

Answer 41

Projection fibres

Question 42

What will damage to corpus collosum cause?

Answer 42

Contralateral meaning issues

Question 43

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

Answer 43

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

Question 44

3 ways blood supply to cerebellum?

Answer 44

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

Question 45

Function dentate nucleus? Where do efferent fibres go?

Answer 45

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

Question 46

Function of postrema?

Answer 46

Chemoreceptive trigger zone for vomitting Detect toxins/harmful

Question 47

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

Answer 47

Cerebral lesion: Can cause nystagmus HYPOTONIA INTENTION tremor caused ms

Question 48

What tremor does cerebellar lesion cause?

Answer 48

Intention tremor