Cerebellum Flashcards
Describe cerebellar notches
Anterior notch lodges pons & medulla
Posterior notch lodges flax cerebelli
Describe fissura prima
A fissue on superior cerebellar surface, separates cerebellum into anterior & posterior lobes
Describe poterolateral fissue
Fissure on inferior cerebellar surface, separates posterior lobe from from flocculo-nodular lobe.
The inferior vermis is found in …..
Vallecula
Name the folds of cerebellar cortex
Folia
Mention the cerebellar nuclei from lateral to medial
Dentate, emboliform, globose, fastigial nuclei
Write short note on archicerebellum
Vestibular connections
Concerned with equilibrium
Formed to 2 Flocculi + Nodule
Write short note on paleocerebellum
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
Write short note on neocerebellum
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
Mention the cerebellar arteries & origin
Superior cerebellar & antero-inferior cerebellar arteries (from basillar)
Inferior cerebellar (from vertebral)
Describe venous drainage of cerebellum
Superior cerebellar veinsdrain into straight & transverse sinuses & into great cerebral vein
Inferior cerebellar veins drain into venous sinuses
Mention Afferent fibers of inferior cerebellar peduncles
Posterior spinocerebellar, reticulocerebellar, dorsal external arcute & ventral external arcuate, vestibulocerebellar, olivo-cerebellar, para-olivo-cerebellar.
Mention efferent fibers of inferior cerebellar peduncles
Cerebello-vestibular, cerebello-reticular, cerebello-olivary.
The largest peduncle is ….., it contains …..
Middle cerebellar
Cortico-ponto-cerebellar
Mention afferents of suoerior cerebrllar peduncles
Anterior spinocerebellar & tetco-spinal
Mention efferent fibers of superior cerebellar peduncles
Fastigio-reticular, cerebello-rubral, dentato-thalamic fibers & dentate-rubro-thalamic fibers
Climbing fibers originate from….., they climb on…..
Olivocerebellar
Smooth dendritic branches of Purkinje cells
Fibers from deep cerebellar nuclei project to…..
Vestibukar nuclei
The largest cerebellar nuclei is…..while most medial is……
Dentate
Fastigial
The wedge-shaped cerebellar nucleus is……while the rounded is…..
Emboliform
Globose
Describe corticobulbar projections of cerebellum
- Largest afferents are from Purkinje to Fastigial which project to vestibular nuclei & reticular formation
- Purkinje fibers project to the three other nuclei, their axons project to red nucleus & ventrolateral nucleus of thalamus
The dentate nucleus recieves afferents from……
Pontine nuclei
Inferior olivary nuclei
