ANATOMY : Cerebellum

Question 1

Covering of the superior part of cerebellum?

Answer 1

Tentorium cerebelli

Question 2

What are the three parts of the cerebellum?

Answer 2

Two cerebellar hemispheres
Median vermis

Question 3

What are the two surfaces of the cerebellum?

Answer 3

The superior surface & inferior surface

Question 4

What are the two notches of the cerebellum?

Answer 4

Anterior : wide / shallow / lodges pons & medulla
Posterior : narrow / deep / lodges falx cerebelli

Question 5

What are the two notches of the cerebellum? `

Answer 5

Anterior : wide / shallow / lodges pons & medulla
Posterior : narrow / deep / lodges falx cerebelli

Question 6

What are the fissures of the cerebellum?

Answer 6

Three fissures:
1. Horizontal fissure
2. Primary fissure
3. Postero-lateral fissure (uvulo-nodular fissure)

Horizontal fissure : superior & inferior surfaces

Primary fissure : anterior & middle lobe

Postero-lateral fissure : middle lobe from flocculonodular lobe

Question 7

List the parts of the vermis. (Cerebellum)

Answer 7

1. Lingula
2. Central lobule
3. Culmen
4. Declive
5. Folium
6. Tuber
7. Pyramid
8. Uvula
9. Nodules

Question 8

List the parts of the cerebellum.

Answer 8

1. Ala
2. Quadrangular lobule
3. Simple lobule
4. Superior semilunar lobule
5. Inferior semilunar lobule
6. Biventral lobule
7. Tonsil
8. Flocculus

Question 9

What are the anatomical lobation of the cerebellum?

Answer 9

1. Anterior lobe
2. Middle lobe (posterior lobe)
3. Flocculonodular lobe

Question 10

What are the functional lobes?

Answer 10

1. Archicerebellum :
   Flocculonodular lobes + lingula
   - vestibular
   - equilibrium
2. Paleocerebellum :
   Anterior lobe + Lingus, pyramid, uvula
   - spinocerebellar
   - regulation of muscle tone
3. Neocerebellum :
   Middle lobe (minus the pyramid, uvula)
   - corticocerebellar
   - coordination of skilled movements

Question 11

What are the 3 cerebellar peduncles that connect the cerebellum to the brain stem?

Answer 11

1. Superior cerebellar peduncle
   C to midbrain
2. Middle cerebellar peduncle
   C to pons
3. Inferior cerebellar peduncle
   C to medulla oblongata

Question 12

What are the afferent fibres of superior cerebellum fibres?

Answer 12

From midbrain:
1. Tectocerebellar fibres from pretectable nucleus
2. Rubrocerebellar fibres from red nucleus

From SC:
1. Anterior spinocerebellar tract

Question 13

What are the efferent fibres of the superior cerebellar peduncle?

Answer 13

1. Dentato rubral fibres -> opposite red nucleus
2. Dentato reticular fibres -> reticular nucleus
3. Dentato thalamic fibres -> thalamus
4. Globose emboliform rubral pathway - red nucleus
5. Hook bundle of Russel :
   - from fastigi nucleus

Question 14

What are the afferents from medulla oblongata in inferior cerebellum peduncle?

Answer 14

1. Olive cerebellar fibres
2. Par olive cerebellar fibres
3. Recticulo CF
4. Vestibulo CF
5. Anterior external arcuate F
6. Posterior spinocerebellar F
7. Striae medullaris
8. Trigemino CF
9. Cuneo CF

Question 15

What are the efferent fibres of the inferior cerebellar peduncle?

Answer 15

Olivo CF
Reticulo CF
Vestibular CF

Question 16

Blood supply of cerebellum

Answer 16

Superior cerebellar artery
Inferior cerebellar artery :
1. Ant
2. Post

Question 17

What are the lesions of the cerebellar syndrome?

Answer 17

1. Hypothenia
2. Ataxia gait
3. Involuntary movement
4. Adiadochokinesis
5. Decomposition of movement
6. Nystagmus
7. Scanning speech