Cerebellum and third and fourth ventricles

Question 1

What is midline of cerebellum?

Answer 1

Vermis

Question 2

Whats the name of the individual ridges on cerebellum?

Answer 2

Folia

Question 3

Each hemisphere of cerebellum has two lobes. What are they?

Answer 3

Anterior and posterior lobe

Question 4

What are two lobes of cerebellum separated by?

Answer 4

Primary fissure

Question 5

What is the third cerebellar lobe and what is its role?

Answer 5

Flocculonododular lobe
- balance

Question 6

How is cerebellum connected to medulla, pons and midbrain?

Answer 6

Inferior, middle and superior cerebellar peduncles

Question 7

What are the three main inputs to the cerebellum?

Answer 7

Corticopontine from primary motor cortex via middle cerebellar peduncle
Vestibular via inferior cerebellar peduncle
Spinal sensory via superior (contralateral) and inferior (ipsilateral) cerebellar peduncles

Question 8

what is the largest of the deep cerebellar nuclei?

Answer 8

dentate nuclei

Question 9

where does dentate nuclei output to?

Answer 9

superior cerebellar peduncles

Question 10

role of dentate nucleus?

Answer 10

planning, initiation and control of movment

Question 11

whats the names of the two more medial deep cerebellar nuclei?

Answer 11

vestigal nuclei
interpose nuclei

Question 12

which is the most medial deep cerebellar nuclei?

Answer 12

vestigal

Question 13

what are the outputs of dentate nuclei?

Answer 13

Red nucleus -> thalamus

Question 14

What parts of cerebellum are important in motor planning?

Answer 14

Corticoponitne inputs to lateral hemispheres
- output via dentate to thalamus and motor/premotor cortices
- learned and skillful movements
-known as cerebrocerebellum

Question 15

what parts of cerebellum are imporntant for motor execution?

Answer 15

vermis and medial regions
- output via fastigal and interposed nuceli
-axial control and gait
- known as spinocerebellum

Question 16

what parts of cerebellum important ofr balance and eye movement?

Answer 16

flocculonodular lobe and vermis
- outputs to vestibular nuclei
- known as vestibulocerebellum

Question 17

whats the name of the floor of the 4th ventricle?

Answer 17

rhomboid fossa

Question 18

what is locus coerulus?

Answer 18

pigmented noradrenergic neurons
- stress responses and arousal

Question 19

what is the inferior tip of rhomboid fossa called?

Answer 19

obex

Question 20

what is area postrema important for?

Answer 20

• nausea
  -chemodetector zone

Question 21

what is facial colliculus?

Answer 21

in pontine region
- swelling caused by fibres of cranial nerve 7 (facila)

Question 22

what is the medullary striae?

Answer 22

where pontocerebellar fibres pass from pons to medullar

Question 23

what are the 3 trigones?

Answer 23

hypoglossal (overlies 11th nerve)
vagal (0verlies 10th nerve)
vestibular (overlies 8th nerve)

Question 24

what separtes lateral venticles?

Answer 24

septum pallucidum

Question 25

what is intraventicular foramen?

Answer 25

connects lateral and third ventricles

Question 26

what forms anterior wall of third ventricle?

Answer 26

lamina terminalis

Question 27

what is the paracentral lobule?

Answer 27

U shaped gyrsu surrounding the mdeial extenstion of central sulcus
- representations of lower limbs in primary motor and somatosensory areas of cortex

Question 28

what are the gracile tubercles (fasciculi)?

Answer 28

dorsal column carrying touch vibration, two-point discrimination and proprioception form the lower limb

Question 29

what are the cuneate tubercles (fasciculi)?

Answer 29

dorsal columns carrying touch vibration, two-point discrimination and proprioception from the upper limb

Question 30

what is the striae of genari?

Answer 30

white band in the primary visual cortex

Question 31

in the primary motor and primary somatosensory areas, what is found medially and laterally?

Answer 31

medially: leg, arm, neck
laterally: lips, fingers

Question 32

what is the interthalamic adhesion?

Answer 32

grey disc joining the thalami on each side behind the intraventricular foramen (may be absent)

Question 33

what is the left hemisphere dominant for?

Answer 33

verbal
linguistic description
maths
sequential
analytical
direct link to ‘consciousness’