Exam 4: L4 Flashcards
The cerebellum is seperated from the brainstem by the ______
Cerebellum is seperated from the brainstem by the fourth ventricle
What are the hemispheric sections of the cerebellum
The _____ is the midline lobe connecting the two hemispheres
Anterior (3 lobes)
posterior (3 lobes)
flocundocular (thing with wings)
The vermis is the midline lobe connecting the two hemispheres
Name the three peduncles
which one doesn’t have an efferent
Three peduncles: superior, middle and infeior
Middle doesn’t have an efferent
Inferior Peduncle:
Afferent?
Efferent?
Inferior Peduncle:
Afferent: inferior olivary nucleus, vestibular nuclei, spinal cord
Efferent: vestibular nuclei
Middle Peduncle:
Afferent?
Efferent?
Middle Peduncle:
Afferent: pontine nuclei (cerebral cortex)
NO efferent
Superior Peduncle:
Afferent?
Efferent?
Superior Peduncle:
Afferent: anterior/ventral spinocerebellar tract
Efferent: originate in deep cerebellar nuclei and project to thalamus
Name the cerebellar layers from outermost to innermost
Outermost: molecular layer
middle: purkinje cell layer
inner most layer: granular layer
Molecular Cell Layer:
____most layer
composed of axons of granule cells (parallel fibers) and the dendritic “___” of purkinje cells, and some basket cells
Molecular cell layer:
outermost layer
composed of axons of granule cells (parallel fibers) and dendritic trees of purkinje cells
Purkineje Layer:
_____ layer
consists of cell bodies of the purkinje cells, which are the _________ of the cerebellum
neurons are thought to release ____
Purkinje Layer:
middle layer
consists of cell bodies of purkinje cells, which are the sole output of the cerebellum
neurons release GABA
Granule Cell layer:
form a unique synapse with mossy fibers terminals called a “_____”
Granule Cell layer:
forms a unique synpase with mossy fiber terminals called “glomerulus”
Purkinke Fibers:
basket cells synpase on purkinje fibers _____
golgi cells inhibit purkinje fibers _____
cerebellum processes things in ____
Basket cells synpase on purkinje fibers directly
golgi cells inhibit purkinje fibers indirectly
cerebellum processes things in ROWS
MOSSY FIBERS:
major _____ input, influences the purkinje fibers _____ via the granule cells
Mossy fibers:
major afferent input, influences purkinje fibers INDIRECTLY via granule cells
Climbing Fibers:
input from the _______ ONLY
one climbing fiber per purkinje cell
climbing fibers modulate mossy fibers by _______
Climbing Fibers:
input from the inferior olive nucleus ONLY
one climbing fiber per purkinje cell
climbing fibers modulate mossy fibers by long lasting-depolarization/depression
