Thread by @Swachitha3

Cerebellum - Volatile facts
1)Deep nuclei- Don't Eat Greasy Food(lateral to medial)
Dentate
Emboliform
Globose
Fastigial(F=firat=oldest)

2)Layers of the cerebellar cortex
My Pretty Garden(outer to inner)
M-Molecular
P-Purkinje
G-granular

3)Cells in each layer
*Outer Molecular layer- Stellate and Basket cells(+dentrites of Purkinje cells)
*Purkinje layer- Purkinje cells
*Inner Granular layer- granule and Golgi cells

4)Mossy fibers :
afferent -the various sites( cerebral cortex, pons, spinal cord, and vestibular nuclei)
Terminate on →GRANULE cells
(memory aid- Moss grows on GRound- mossy fibers to Granule cells)
synapse btw the 2 are called Glomerulus

5) Climbing fibers:
afferent axons from the INFERIOR OLIVATORY NUCLEUS of the medulla → terminate on Purkinje cells
(memory aid - CLIMB uP- climbing fibres to purkinje cell layer)

climbing, mossy and parallel fibres are excitatory( glutamate)
everything else inhibitory
ONLY EFFERENT nucleus-PURKINJE cells(memory aid- Puking out)
Output to -Deep Cerebellar Nuclei(degf)
It is inhibitory- GABA

RECAP
Granule cells excite, and other cells inhibit
*Granule cells- stimulate purkinje, stellate, and basket cells
*Stellate and basket cells inhibit purkinje cells
*GolgI cells- Inhibit Granule cells
*Purkinje cells - inhibit Deep nuclei

6)Peduncles
memory aid -SEMIA(like semiya upma- South Indian Breakfast😬)
Superior -Major Efferent Pathway(to C/L cerebral cortex)
Middle and Inferior -Mostly Afferent(I/L proprioceptive info from the spinal cord)

7)Functional zones of cerebellum
*Cerebrocerebellum- lateral hemispheres(has dentate nucleus)
*Spinocerebellum- vermis and intermediate zones(contains embolifom and globose aka interposed nuclei)
*Vestibulocerebellum- flocculonodular lobe(contains fastigial nuclei)

Not covering tracts now. Maybe another tweet😵‍💫🥴
#NEETPG2023 #MedEd