Cerebellum

Question 1

Describe cerebellar notches

Answer 1

Anterior notch lodges pons & medulla
Posterior notch lodges flax cerebelli

Question 2

Describe fissura prima

Answer 2

A fissue on superior cerebellar surface, separates cerebellum into anterior & posterior lobes

Question 3

Describe poterolateral fissue

Answer 3

Fissure on inferior cerebellar surface, separates posterior lobe from from flocculo-nodular lobe.

Question 4

The inferior vermis is found in …..

Answer 4

Vallecula

Question 5

Name the folds of cerebellar cortex

Answer 5

Folia

Question 6

Mention the cerebellar nuclei from lateral to medial

Answer 6

Dentate, emboliform, globose, fastigial nuclei

Question 7

Write short note on archicerebellum

Answer 7

Vestibular connections
Concerned with equilibrium
Formed to 2 Flocculi + Nodule

Question 8

Write short note on paleocerebellum

Answer 8

Connections are spinal
Recives proprioceotive input from body & copy of motor plan in cortex thus functions in coordination
Formed of:
1. Vermal part connects to trunk muscles bilaterally
2. Paravermal part of cerebellar hemispheres connects to ipsilateral distal limb muscles

Question 9

Write short note on neocerebellum

Answer 9

Connections are cortico-ponto-cerebellar & project to contralateral cerebral cortex via dentate nucleus
Concerned with palnning & programming with motor cortex
Formed of most lateral part of cerebral hemispheres

Question 10

Mention the cerebellar arteries & origin

Answer 10

Superior cerebellar & antero-inferior cerebellar arteries (from basillar)
Inferior cerebellar (from vertebral)

Question 11

Describe venous drainage of cerebellum

Answer 11

Superior cerebellar veinsdrain into straight & transverse sinuses & into great cerebral vein
Inferior cerebellar veins drain into venous sinuses

Question 12

Mention Afferent fibers of inferior cerebellar peduncles

Answer 12

Posterior spinocerebellar, reticulocerebellar, dorsal external arcute & ventral external arcuate, vestibulocerebellar, olivo-cerebellar, para-olivo-cerebellar.

Question 13

Mention efferent fibers of inferior cerebellar peduncles

Answer 13

Cerebello-vestibular, cerebello-reticular, cerebello-olivary.

Question 14

The largest peduncle is ….., it contains …..

Answer 14

Middle cerebellar
Cortico-ponto-cerebellar

Question 15

Mention afferents of suoerior cerebrllar peduncles

Answer 15

Anterior spinocerebellar & tetco-spinal

Question 16

Mention efferent fibers of superior cerebellar peduncles

Answer 16

Fastigio-reticular, cerebello-rubral, dentato-thalamic fibers & dentate-rubro-thalamic fibers

Question 17

Climbing fibers originate from….., they climb on…..

Answer 17

Olivocerebellar
Smooth dendritic branches of Purkinje cells

Question 18

Fibers from deep cerebellar nuclei project to…..

Answer 18

Vestibukar nuclei

Question 19

The largest cerebellar nuclei is…..while most medial is……

Answer 19

Dentate
Fastigial

Question 20

The wedge-shaped cerebellar nucleus is……while the rounded is…..

Answer 20

Emboliform
Globose

Question 21

Describe corticobulbar projections of cerebellum

Answer 21

1. Largest afferents are from Purkinje to Fastigial which project to vestibular nuclei & reticular formation
2. Purkinje fibers project to the three other nuclei, their axons project to red nucleus & ventrolateral nucleus of thalamus

Question 22

The dentate nucleus recieves afferents from……

Answer 22

Pontine nuclei
Inferior olivary nuclei